Dogs Where the Red Fern Grows: The Science Behind Scent,...
Explore the canine science behind the dogs in Where the Red Fern Grows — coonhound scent-tracking biology, loyalty, and what it means for modern owners.
Quick Answer: What Breed Are the Dogs in Where the Red Fern Grows?
The two dogs in Wilson Rawls' classic novel Where the Red Fern Grows — Old Dan and Little Ann — are Redbone Coonhounds. These are scent hounds bred in the American South for tracking raccoons and other game over rugged terrain. Their remarkable abilities — trailing a scent miles long, working as a coordinated pair, and displaying intense loyalty — are all rooted in real canine biology. This article explains the science behind what makes coonhounds like Old Dan and Little Ann so extraordinary.
If you grew up reading Wilson Rawls' 1961 novel or watched either film adaptation, you probably remember crying over Old Dan and Little Ann. Those two Redbone Coonhounds didn't just feel like characters — they felt like the most devoted, capable dogs imaginable. The good news? The behaviors Rawls described are grounded in real canine science. Coonhounds genuinely do possess extraordinary olfactory systems, genuine pair-bonding tendencies, and a working style that traces back thousands of years to their wolf ancestors. Here's the biology behind the legend.
The Scent-Tracking Superpower: How Coonhounds Process Smell
By the Numbers: The Coonhound Olfactory System
A Redbone Coonhound's nose isn't just good — it's a biological instrument that outperforms most human-made sensors. Here's what's happening inside that long muzzle:
- Olfactory receptors: Coonhounds carry approximately 220–300 million scent receptors in their nasal cavity, compared to roughly 5–6 million in humans (source: American Kennel Club).
- Olfactory bulb size: The olfactory bulb — the brain region that processes scent — is proportionally 40 times larger in scent hounds than in humans relative to total brain volume.
- Vomeronasal (Jacobson's) organ: Located in the roof of the mouth, this secondary scent-detection system allows coonhounds to detect pheromones and chemical signatures that the primary nasal passages miss entirely.
- Scent discrimination: Studies published in the Journal of Veterinary Behavior have demonstrated that trained scent hounds can distinguish between individual animals of the same species — meaning a coonhound can tell one raccoon's trail from another's.
How the Coonhound Brain Processes a Trail
When Little Ann puts her nose to the ground in the novel, she's performing a multi-layered neurological operation. Air enters through the nostrils and is split into two streams: one for respiration and one dedicated to olfaction. The olfactory stream passes over the ethmoturbinal bones — intricate, scroll-like structures covered in olfactory epithelium. Each receptor cell binds to specific volatile organic compounds (VOCs) shed by the raccoon: skin rafts, glandular secretions, urine markers, and disturbed vegetation.
The signal travels via the olfactory nerve (Cranial Nerve I) directly to the olfactory bulb, bypassing the thalamic relay that most other senses require. This direct pathway is why scent triggers such immediate, intense behavioral responses in hounds. The olfactory bulb then projects to the piriform cortex (scent identification), the amygdala (emotional significance), and the entorhinal cortex (spatial memory mapping).
Practically, this means when your coonhound locks onto a scent, they are simultaneously identifying what left it, when they left it (by measuring VOC degradation rates), and where they were heading (by comparing scent concentration gradients between left and right nostrils). Research from the Merck Veterinary Manual confirms that dogs can detect scent trails that are several days old under favorable humidity and temperature conditions.
Evolutionary Roots: Why Scent-Tracking Developed in Ancestral Canids
From Wolf Pack to Coonhound Kennel
The scent-tracking behavior you see in Redbone Coonhounds didn't emerge from selective breeding alone — it's an amplified version of an ancestral survival strategy. Gray wolves (Canis lupus) rely on olfaction as their primary long-range detection sense, capable of detecting prey at distances of over 1 mile (1.6 km) under ideal wind conditions.
Over thousands of years of domestication, humans selectively bred dogs that showed the strongest olfactory persistence — the ones that wouldn't abandon a trail. Scent hounds like the Redbone Coonhound represent the extreme end of this selection pressure. The physical traits that support this — long ears that sweep scent particles toward the nose, deep chests that support sustained aerobic effort, and loose skin around the face that traps scent molecules — were all refined through centuries of functional breeding in the American South, beginning with foxhounds and bloodhounds imported from Europe in the 17th and 18th centuries.
The Redbone Coonhound specifically was developed in the southeastern United States, likely from a mix of Bloodhound, Foxhound, and possibly Irish or Welsh hound stock. Breeders selected for a dog that could track "cold" trails (old scent), work independently from the handler at night, and vocalize ("bark on trail") so the hunter could follow by sound. Every one of these traits maps to a measurable physiological adaptation.
The Pair-Bond Phenomenon: Why Old Dan and Little Ann Worked as a Team
One of the most emotionally powerful elements of Where the Red Fern Grows is the inseparable bond between Old Dan and Little Ann. When one dies, the other loses the will to live. Is this scientifically plausible?
The short answer: partially, yes. Dogs are a domesticated social species with genuine pair-bonding and group-cohesion mechanisms. The neurochemical basis involves:
| Myth | Scientific Fact |
|---|---|
| "Dogs die of a broken heart just like in the book" | Dogs can experience severe grief-like behavioral depression after losing a bonded companion. Elevated cortisol, reduced appetite, and lethargy are documented. However, literal death from grief is extremely rare and usually involves secondary complications like dehydration or immune suppression — not a sudden, dramatic passing as portrayed in fiction. |
| "Coonhounds always hunt in pairs" | Coonhounds are versatile — they can hunt solo, in pairs, or in packs. However, paired hounds often develop complementary working styles (one as the "tree dog" who locates, the other as the "strike dog" who initiates the chase). This is learned behavior reinforced through repeated hunting sessions, not an innate requirement. |
| "Dogs are loyal because they love us" | The oxytocin feedback loop between dogs and their humans is scientifically verified (Nagasawa et al., 2015, Science). Mutual gaze between dog and owner elevates oxytocin in both species — the same hormone involved in human parent-infant bonding. This is real, measurable attachment biology, not anthropomorphism. |
| "A coonhound will always come back to its owner" | Scent hounds have strong homing instincts, but they are also bred for independence. A coonhound on a hot trail may travel several miles and lose awareness of its handler's location. GPS tracking collars (like the Garmin Alpha 300, ~$400) are standard safety equipment for modern coonhound hunters for this reason. |
The Oxytocin Connection
Research published in the journal Science (Nagasawa et al., 2015) demonstrated that when dogs and their owners gaze at each other, urinary oxytocin levels increase significantly in both species. This mutual neurochemical reward system is unique to domesticated dogs — it does not occur between wolves and their human handlers, even wolves raised from puppyhood. This suggests that the intense loyalty Rawls depicted between Billy and his hounds has a genuine biological foundation refined over roughly 15,000–30,000 years of co-evolution.
Practical Implications: Living With a Coonhound-Type Dog
What This Science Means for Your Daily Life
If you own a Redbone Coonhound, a Bluetick, a Treeing Walker, or any scent hound, here's how their biology translates into real-world care requirements:
1. Exercise Needs Are Non-Negotiable
Coonhounds need 60–90 minutes of vigorous activity daily. A leashed walk around the block won't satisfy a dog built to chase game for hours across mountainous terrain. Ideal activities include:
- Long-line running in fenced areas (minimum 6-foot fencing — coonhounds can climb)
- Scent work games (hide treats or toys and let them track)
- Canicross or bikejoring for high-energy individuals
- Structured hunt tests through the AKC Coonhound program
2. Scent Enrichment Prevents Behavioral Problems
A bored coonhound is a destructive coonhound. Budget $20–$50/month on scent enrichment supplies: snuffle mats, frozen Kong toys stuffed with novel proteins, and scent-discrimination training kits. This isn't optional — it's meeting a biological need as fundamental as food.
3. Vocalization Is a Feature, Not a Bug
Coonhounds bay — a deep, resonant howl-bark that carries for miles. This is their bred-in communication system. You cannot train it away without causing psychological distress. If you live in close-quarters housing or an HOA with noise restrictions, a coonhound is likely the wrong breed choice.
4. Recall Training Requires Extra Patience
Because scent hounds are neurologically wired to follow trails with single-minded focus, off-leash recall is genuinely difficult. Use positive reinforcement methods only — high-value food rewards (freeze-dried liver, ~$15/bag), long-line training (30-foot line, ~$25), and progressive distance drills over 6–12 months. Never use shock collars or prong collars; these create fear-based suppression that damages the dog's working drive and trust in the handler.
5. GPS Collar Investment
For any coonhound owner who allows off-leash time, a GPS tracking collar is essential. The Garmin Alpha 300 (~$400) or Fi Series 3 Smart Collar (~$149 + $99/year subscription) are current top options. Given that coonhounds can cover 5–10 miles in a single chase session, this is safety-critical equipment, not a luxury.
Breed Variations: Coonhound Types Compared
While Old Dan and Little Ann were Redbone Coonhounds, several coonhound breeds share similar biology with distinct variations:
| Breed | Weight (lb / kg) | Key Trait Difference | Scent Sensitivity Ranking |
|---|---|---|---|
| Redbone Coonhound | 45–70 lb / 20–32 kg | Most versatile; strong swimmer; red coat provides visibility at night | High |
| Bluetick Coonhound | 45–80 lb / 20–36 kg | "Cold-nose" specialist; excels at old, degraded scent trails | Very High |
| Treeing Walker Coonhound | 50–70 lb / 23–32 kg | Fastest coonhound; hot-nose specialist; most competitive in hunt tests | High (speed-focused) |
| Black and Tan Coonhound | 50–75 lb / 23–34 kg | Largest coonhound; most Bloodhound influence; strongest cold-trail ability | Highest among coonhounds |
| Plott Hound | 40–60 lb / 18–27 kg | Only brindle coonhound; bred for bear/boar; highest prey drive and tenacity | Moderate (power over precision) |
When Scent-Tracking Behavior Signals a Problem
While obsessive scent-following is normal for coonhounds, certain changes in olfactory behavior warrant veterinary attention:
Red Flags: When to Consult Your Veterinarian
- Sudden loss of interest in scent work — may indicate nasal cavity infection, dental disease affecting the vomeronasal organ, or neurological issues including canine cognitive dysfunction (CCD) in senior dogs over 10 years old.
- Repeatedly bumping into objects or failing to locate food bowls — potential sign of vision loss, vestibular disease, or brain tumor. Seek veterinary evaluation within 24–48 hours.
- Stereotypic sniffing in one spot for extended periods (>10 minutes) without apparent stimulus — may indicate compulsive disorder, which affects an estimated 2–5% of dogs and responds to behavioral modification combined with veterinary-prescribed SSRIs.
- Nasal discharge, sneezing, or nosebleeds alongside decreased scent performance — could indicate nasal mites, fungal infection (aspergillosis), or neoplasia. Diagnostic workup typically includes rhinoscopy ($300–$800) and CT imaging ($800–$1,500).
Always consult your veterinarian if you notice sudden behavioral changes. Early intervention significantly improves prognosis for most conditions.
How Coonhound Scent Processing Differs From Humans
To truly appreciate what Old Dan and Little Ann were doing in the Ozark Mountains, it helps to understand the gap between canine and human olfaction:
| Capability | Human | Coonhound |
|---|---|---|
| Olfactory receptors | ~5–6 million | ~220–300 million |
| Olfactory cortex (relative brain volume) | ~0.03% | ~1.2% (40x larger proportionally) |
| Scent detection threshold (butyric acid) | ~5 parts per million | ~5 parts per trillion |
| Ability to track aged scent | Minutes to hours (trained individuals) | Days to over a week under ideal conditions |
| Directional scent discrimination (L vs. R nostril) | Limited, with training | Innate; each nostril processes independently for 3D scent mapping |
Put another way: if a human could see as far as a coonhound can smell, you could read the fine print on a roadside sign from over 30 miles away.
Frequently Asked Questions
Why do dogs in Where the Red Fern Grows howl and bay so much?
Baying is a coonhound's working communication system. When a hound "strikes" (picks up a fresh scent), it vocalizes to alert the hunter and the other dogs. The pitch and cadence change as the trail gets hotter — a "chop bark" means the dog is actively chasing, while a steady, deep bay means the raccoon has been "treed" (cornered up a tree). This vocalization pattern is hardwired; it develops in puppies as young as 8–12 weeks old when first exposed to game scent.
Can dogs really track a scent that's days old?
Yes. Under favorable conditions (cool temperatures, moderate humidity, undisturbed terrain), scent hounds can follow trails that are several days to over a week old. The volatile organic compounds that make up a scent signature degrade at predictable rates, and experienced hounds learn to read these degradation patterns to estimate trail age. Bloodhounds hold the record — a Bloodhound named Bobby once tracked a 300-hour-old (12.5-day) scent trail in a controlled test.
Is it normal for my coonhound to ignore me when it smells something?
Yes — this is one of the most common frustrations for scent hound owners, and it's completely normal. When a coonhound's olfactory system locks onto a compelling scent, the neural activation in the reward centers of the brain is so intense that external stimuli (including your voice) are essentially filtered out. This isn't disobedience; it's neurological prioritization. Management strategies include long-line training, high-value reward conditioning, and accepting that 100% off-leash recall may never be achievable for this breed type.
What does it mean when my dog "trees" something?
Treeing is the terminal behavior in a coonhound's hunting sequence. After tracking and chasing prey (typically a raccoon, opossum, or bobcat), the hound follows the animal up a tree and then positions itself at the base, baying continuously to hold the animal in place and alert the handler. This is an instinctive behavior — even pet coonhounds with no hunting experience will sometimes "tree" squirrels or cats in the backyard.
How is a coonhound's sense of smell different from a Bloodhound's?
Bloodhounds have the most developed olfactory system of any dog breed, with up to 300 million receptors and the largest olfactory bulb proportionally. Coonhounds typically have 220–270 million receptors. However, coonhounds were bred for a different job: they need to track and chase, so they balance scent sensitivity with speed and agility. Bloodhounds are pure trailers — slower, more methodical, and capable of older cold trails. Think of the Bloodhound as a precision instrument and the coonhound as a versatile field tool.
Are Redbone Coonhounds good family dogs?
Redbones can be excellent family dogs for active households that understand their needs. They're generally gentle with children, sociable with other dogs, and low-aggression toward people. However, their exercise requirements (60–90 minutes daily), vocalization levels (frequent baying), and prey drive (will chase cats, rabbits, and small wildlife) make them poor fits for apartments, sedentary households, or homes with small pets. Annual care costs for a healthy Redbone run $1,200–$2,000 including food ($50–$80/month for a quality large-breed kibble), preventive medications, and routine veterinary care. Purchase price from a responsible breeder typically ranges from $500–$1,500, while adoption through breed-specific rescues like the American Coonhound Rescue Association costs $200–$400.
Sources & Further Reading
- AKC Redbone Coonhound Breed Standard
- Merck Veterinary Manual: Senses of Dogs
- Nagasawa, M. et al. (2015). "Oxytocin-gaze positive loop and the coevolution of human-dog bonds." Science, 348(6232), 333–336.
- Craven, M. et al. (2010). "The scent of the trail: airflow and odorant transport in the dog nose." Proceedings of the Royal Society B.
Robin Maitland
All our authors care for dogs every day — read more of their work on the authors page.
