When a dog licks another dog’s ear, it’s almost always a sign of affection and social bonding. Dogs groom each other as a way to strengthen their relationship, and ears happen to be a spot that’s hard for the other dog to clean on its own. In most cases, this behavior is completely normal. It only becomes a concern when it’s excessive, obsessive, or causing irritation to the dog on the receiving end.
Why Dogs Groom Each Other’s Ears
Licking is one of the first sensations a puppy experiences. Mothers lick their newborns to stimulate breathing, help with elimination, and build attachment. That early association between licking and comfort carries into adulthood, where dogs use it to maintain social connections with other dogs in the household.
When the licking is gentle, the licker has relaxed body language, and the other dog doesn’t seem bothered, it’s a straightforward expression of closeness. Dogs form deep attachments, and physical contact like this is one of their primary tools for reinforcing those bonds. Think of it as the canine equivalent of sitting close together on the couch. Ears are also a particularly appealing target because they collect wax, oils, and moisture that dogs find interesting to taste and clean.
Ear Licking as a Social Signal
Beyond affection, ear licking can communicate something about the relationship between two dogs. Dogs naturally establish social hierarchies within a household, and a more submissive dog may lick a more confident dog’s ears as a way of signaling deference and respect. You might notice this paired with other submissive body language: a lowered head, a tucked tail, or rolling onto the back to expose the belly.
This isn’t a cause for concern. It’s just how dogs negotiate their social dynamics. As long as both dogs seem comfortable and neither is being bullied or pressured, it’s a normal part of how they coexist.
When Ear Licking Becomes a Problem
The line between normal grooming and a problem is frequency and intensity. If one dog is licking another’s ears for long stretches, returning to the behavior constantly throughout the day, or can’t be easily redirected to something else, it may have crossed into compulsive territory.
Compulsive behaviors in dogs, which can include repetitive licking, tail chasing, spinning, and pacing, typically develop in response to stress or anxiety. According to Texas A&M’s veterinary behavior experts, these behaviors can trigger the release of calming hormones and a decreased heart rate, which makes them self-reinforcing. The dog feels better while doing it, so stopping becomes difficult. A key test: if you interrupt the behavior and the dog returns to it within minutes, or if you can’t distract them at all, that’s a sign it may be compulsive rather than social.
Compulsive licking can also indicate that the licker is detecting something unusual about the other dog’s ears. Dogs have a sharp sense of smell, and an ear that’s developing an infection may produce discharge or odor that draws extra attention. So a sudden increase in ear-licking behavior is worth paying attention to, even if the licker seems perfectly healthy.
Health Risks for the Dog Being Licked
Occasional ear licking poses no health risk. But when it’s frequent, the added moisture inside the ear canal creates a warm, damp environment where bacteria and yeast thrive. The ear canal naturally contains small populations of both, and under normal conditions they stay in balance. Excess moisture from saliva disrupts that balance and allows those organisms to multiply quickly, potentially leading to an ear infection.
Signs that the licked dog’s ears are becoming irritated or infected include:
- Head shaking or scratching at the ear
- Dark or unusual discharge
- A noticeable odor coming from the ear
- Redness or swelling inside the ear canal
- Crusting or scabs around the ear
- Signs of pain when the ear is touched
Some dogs with early ear infections show no obvious discomfort at all, just a buildup of wax and discharge that you’d only notice by looking inside the ear. If you’re seeing any of these signs, it’s worth having the ears checked, especially if the other dog has been licking them heavily.
How to Manage Excessive Ear Licking
If the behavior is occasional and both dogs seem relaxed, there’s nothing you need to do. It’s healthy social grooming. But if it’s becoming frequent enough that you’re worried about the other dog’s ears, or the licker seems unable to stop, redirection is the first approach to try.
When you notice the licking start, immediately get the licker’s attention with an interactive toy, a game of tug, or a short training session. The goal is to offer a competing activity that’s genuinely engaging, not just a verbal correction. Consistency matters here. If you redirect every single time for a couple of weeks, many dogs will naturally reduce the behavior. If redirection consistently fails and the dog snaps right back to licking within moments, or if ear infections keep developing in the other dog despite your efforts, it’s worth discussing the behavior with your vet. In some cases, compulsive licking responds to medication that addresses the underlying anxiety driving it.
Keeping the licked dog’s ears clean and dry also helps reduce the infection risk. A quick check inside both ears every week or so lets you catch early signs of redness or buildup before they turn into a full infection.