Bunnies rub their chin on things to mark them with scent. Rabbits have scent glands located just under their chin, and when they press their chin against an object, a person, or another rabbit, they’re depositing an invisible secretion that essentially says “this is mine.” The behavior is called “chinning,” and it’s one of the most common and normal things rabbits do.
How Chinning Works
The scent glands responsible for chinning are called submandibular glands, tucked right beneath the skin on the underside of a rabbit’s jaw. These glands produce a waxy secretion that humans can’t smell at all, but other rabbits pick up on easily. When your bunny glides its chin across a table leg, a food bowl, or your arm, it’s wiping a thin layer of this secretion onto the surface. The glands contain specialized secretory cells that can ramp up production when a rabbit is actively marking, becoming more active during periods of intense scent-laying.
Think of it like a cat rubbing its cheeks on furniture. Cats have scent glands on their face and do essentially the same thing for the same reason. The key difference is location: cats use their cheeks, rabbits use the underside of their chin.
Territory and Ownership
Chinning is fundamentally a territorial behavior. In wild rabbit populations, it plays a direct role in establishing and maintaining territory boundaries. A rabbit that has scented an area with its chin gland secretions actually behaves more confidently in that space. Research on male domestic rabbits found they were more likely to dominate social interactions in enclosures that had been marked with their own chin gland secretions, suggesting the scent acts as a kind of psychological home-field advantage.
In your home, this translates to your rabbit chinning the corners of rooms, furniture legs, food dishes, toys, litter boxes, and anything new you bring into their space. A new cardboard box, a rearranged piece of furniture, or a shopping bag left on the floor will often get an immediate chin-rub. Studies confirm that an object’s novelty is one of the strongest triggers for chinning. Your rabbit isn’t anxious about new things; it’s simply updating its scent map.
What It Means When Your Bunny Chins You
If your rabbit presses its chin against your hand, arm, shoulder, or leg, it’s claiming you as part of its territory. This is a compliment. It means your rabbit considers you “theirs” in the same way it considers its favorite corner of the room theirs. It’s not a sign of dominance over you or aggression. It’s closer to a possessive form of affection.
Rabbits also chin other rabbits within their social group. This isn’t about fighting or establishing who’s boss. It’s more like maintaining the group’s shared scent identity, reinforcing social bonds alongside territorial ones.
Dominance and Hormones
Not all rabbits chin at the same rate. In males, chinning frequency is directly correlated with testosterone levels and social rank. Higher-ranking males with more circulating testosterone chin more often and more vigorously. This makes chinning a useful window into your rabbit’s confidence level. A rabbit that chins frequently is generally a rabbit that feels secure and assertive in its environment.
Spaying or neutering typically reduces hormone-driven behaviors, including chinning. A neutered male will usually chin less than he did before the procedure, though the behavior rarely disappears entirely. It’s hardwired enough that even rabbits with lower hormone levels still do it. Females also chin, and in fact, young females start slightly earlier than males.
When Chinning Starts
Baby rabbits don’t chin. The behavior kicks in around six to seven weeks of age, coinciding with early hormonal development. In one study tracking New Zealand rabbits from birth through five months, females began chinning at an average of 41 days old, while males started a bit later at around 47 days. Interestingly, young females actually chin more frequently than young males at first, though males eventually surpass them as testosterone levels rise through adolescence.
If you’ve adopted a young bunny and haven’t seen chinning yet, give it time. Once it starts, you’ll notice it everywhere.
Objects That Get Chinned the Most
Rabbits are selective about what they chin, and the pattern reveals what matters to them. The most commonly chinned objects tend to be:
- New items brought into their space, especially anything with an unfamiliar smell
- Edges and corners of furniture, walls, and enclosures
- Food and water dishes, particularly right after they’ve been cleaned
- Other rabbits’ belongings in multi-rabbit households
- Their favorite humans, usually on hands, feet, or clothing
If you clean your rabbit’s area and notice a frenzy of chinning afterward, that’s because you’ve essentially erased their scent map and they’re rebuilding it from scratch. The same thing happens if you wash a blanket or toy they’ve been marking. To your rabbit, a freshly cleaned space is an unclaimed space.
Chinning vs. Other Scent Marking
Chinning isn’t the only way rabbits mark territory. They also use droppings and urine, which serve a similar purpose but through different channels. Chinning is the quietest, cleanest, and least disruptive form of marking. The secretion is odorless to humans and leaves no visible residue. This is why many rabbit owners don’t even realize what’s happening until they learn about the behavior.
Intact males in particular may layer multiple marking strategies, combining chinning with scattered droppings and urine spraying, especially during breeding season or when a new rabbit enters the household. Neutering significantly reduces the urine and fecal marking but leaves chinning mostly intact, which is one more reason veterinarians recommend early spaying and neutering for pet rabbits.