Why your rabbit's teeth never stop growing and what to watch for
Rabbits have one of the most unusual dental arrangements in the animal kingdom. Their teeth grow continuously throughout life, sometimes up to two millimetres every week. This biological quirk means dental care is not a one-off concern but a lifelong commitment that shapes everything from what your bunny eats to how often it needs professional check-ups.
Across Australia, rabbits are popular family pets, from lop-eared bundles hopping around Brisbane backyards to mini rexes keeping Melbourne households entertained on quiet arvos. More Aussie families are discovering the unique joys and challenges of rabbit ownership, with the country's warm climate and indoor lifestyle actually favouring rabbit keeping, provided owners understand the specific dental needs these creatures have.
Yet dental problems remain one of the top reasons rabbits end up at the vet. Issues like malocclusion and spurs can develop quietly, only becoming obvious once a rabbit stops eating or starts drooling. Recognising what is normal and what is not can mean the difference between a simple fix and a life-threatening emergency. This guide walks through why rabbit teeth behave the way they do and the warning signs to watch for.
The biology behind constant tooth growth
Rabbits are lagomorphs, distinguished by their continuously growing teeth. Both the incisors at the front and the molars at the back are open-rooted, meaning they never stop erupting throughout the rabbit's life. In the wild, this adaptation allows the animal to wear down teeth gradually as it chews on grasses, bark, and other tough vegetation.
This evolutionary trait served wild rabbits well across their native Iberian range, yet it is worth remembering that in Australia, feral rabbits are considered one of the most damaging invasive species. Their teeth and appetites have caused enormous environmental harm since their introduction in the 1800s. For pet rabbits, the same dental machinery requires careful management through diet and observation rather than constant foraging.
The chewing motion of a rabbit involves a distinctive lateral grinding action that wears down the cheek teeth evenly. When this process is disrupted, problems begin. The upper and lower teeth must meet in near-perfect alignment, and any deviation can lead to overgrowth in one area and painful ulcers on the opposite side.
Spotting dental trouble before it becomes serious
Dental issues in rabbits rarely announce themselves with obvious pain. Rabbits are prey animals, and showing weakness in the wild made them vulnerable. By the time a bunny stops eating completely, the situation may already be advanced. Common dental problems include malocclusion, spurs, abscesses, and elongation of the tooth roots.
Early warning signs can be subtle. Drooling or a wet chin is one of the most telling indicators, often leaving fur around the mouth and front paws damp and matted. Changes in droppings, including smaller or fewer pellets, suggest the rabbit is not eating enough fibre. Weight loss, facial swelling, or a preference for softer foods can all point to dental disease.
Behavioural shifts are equally important. A normally curious rabbit that becomes withdrawn, or one that drops food from its mouth while eating, deserves prompt attention. Eye discharge, particularly from one eye, can indicate root elongation pushing into the tear duct, a condition vets call dacryocystitis. Contacting a rabbit-savvy veterinarian quickly is essential, since dental disease can progress rapidly.
Diet as the first line of defence
The single most important factor in keeping rabbit teeth healthy is diet. Hay should make up roughly eighty percent of daily intake, providing both the abrasive fibre needed to grind down teeth and the long-strand material that keeps the gut moving properly. Without constant chewing on hay, teeth cannot wear down fast enough.
In Australia, good-quality hay is widely available. Timothy hay remains the gold standard, but oaten and meadow hay are popular alternatives sourced from produce stores, rural suppliers, and major retailers like Bunnings. Many Aussie rabbit owners buy in bulk from farms in Victoria or New South Wales. A bale stored dry can last a small household for months.
Fresh greens also play a role, providing variety and additional nutrients. Dark leafy vegetables such as bok choy, kale, and romaine lettuce, along with herbs including parsley and coriander, are widely available at Woolworths, Coles, and local greengrocers. Pellets should make up only a small portion of the diet, and sugary treats should be avoided. The wrong diet fails to wear teeth down and disrupts the gut flora, leading to a cascade of health issues.
Professional veterinary care and at-home monitoring
Even with the best diet, most rabbits benefit from regular professional dental checks. A vet experienced with rabbits can look inside the mouth using a specialised scope, often detecting problems before they become visible to the owner. For breeds prone to dental issues, particularly dwarf lops and Netherland dwarfs, annual checks are recommended.
Professional treatment varies depending on the issue. Spurs are typically filed down using a specialised burr, usually under light anaesthesia. More serious cases involving abscesses or root elongation may require surgery, including tooth extraction. Modern anaesthesia protocols have improved dramatically, making these procedures safer than they once were, though they still carry some risk.
For Australian families, accessing rabbit-savvy veterinary care has become easier, though it is wise to confirm your local practice has experience with lagomorphs. The RSPCA offers guidance on rabbit care. Mobile veterinary services allow rabbits to be examined at home, reducing stress. For multi-pet households, home visits mean rabbits can be checked alongside other family pets. Owners with older cats may find useful guidance on how to tell if your older cat needs a thyroid check.
Emergency warning signs that demand quick action
Some dental situations qualify as genuine emergencies. A rabbit that has completely stopped eating for more than twelve hours is in serious danger, as the digestive system can shut down entirely, a condition called gastrointestinal stasis. Facial swelling or a suddenly bulging eye also warrant urgent attention.
If your regular vet is unavailable, emergency veterinary hospitals in Sydney, Melbourne, Brisbane, Perth, and Adelaide operate after hours and accept rabbits. Keeping a familiar travel carrier ready can shave minutes off a stressful trip.
Prevention remains far better than cure. Daily observation of eating habits, droppings, and demeanour takes only minutes but catches problems early. Weighing your rabbit weekly provides another early warning, since gradual weight loss often precedes obvious signs of illness. The right combination of diet, observation, and professional support keeps those ever-growing teeth working as they should.
Daily habits that support healthy teeth
- Provide unlimited fresh hay daily in a clean rack
- Offer safe leafy greens from your local greengrocer
- Avoid pellets and treats listing molasses, honey, or dried fruit first
- Schedule annual vet checks, or twice-yearly for older rabbits
- Watch for drooling, weight loss, or changes in droppings each week
A rabbit's continuously growing teeth require thoughtful, ongoing care. From selecting the right hay to spotting early signs of trouble, every small habit contributes to long-term wellbeing. Mobile veterinary services offer a gentle option, removing the stress of travel and unfamiliar waiting rooms.
If your rabbit has not had a recent dental check, or you have noticed warning signs, Pamela A. Clary, DVM and the Mobile Veterinary Service team offer evening and weekend appointments throughout Greater St. Louis. From wellness exams to compassionate end-of-life care, every visit is tailored to your pet. Reach out today to book.