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Do Pet Mice Bite You? [What Causes This Behavior & How To Stop It]

Mice, with their tiny features, inquisitive personalities and adorable ears make exceptionally cute pets. When considering getting any potential pet, it is normal for perspective owners to have some questions. If you are thinking about getting a pet mouse, these questions may be about their enclosure, care or whether or not they bite. I decided to do some research on their biting behaviors, the causes and the likelihood of it occurring. I would like to share this information with you here today.

So, do pet mice bite you? Pet mice typically only bite when they are scared or they think something is food for them. When a pet mouse is first brought home, they may bite when their owner first tries to pick them up or handle them. Owners should take time to build trust with their pet mice to reduce the risk of biting.

It can take a while to build trust and familiarity with your pet mouse. Mice tend to be shy animals at first, but over time, as trust is built, you will likely see their distinct personalities and be able to enjoy handling them.

It should be noted that biting can be quite common when first building a rapport with your mice. However, understanding why they may bite and how to minimise the risk of your mouse biting you is a great step to take.

Let us now take a closer look at the topic in greater detail, covering the most commonly asked questions and considerations as an owner.

Are Pet Mice Likely To Bite?

Pet mice will usually only bite when they feel threatened, so it important to take due care and sensitivity when looking after your pet.  

Biting in mice, generally speaking is not a form of aggression. Mice are typically of a passive and calm nature. Mice usually bite when they feel scared or threatened; biting is a form of protection for your pet mouse.

Whilst it can be frustrating to receive a nip (bite) from your pet mouse, their bites often don’t do more than break the skin and cause very little pain.

There is usually a reason that your mice will bite, understanding what causes a mouse to bite can enable owners to prevent this from happening. We have some advice that may help you to minimise the risk of your pet mice biting you.

Build trust with your pet mice. Your mouse may bite you if they feel scared of you. Building trust with your pet mice is arguably the most important factor in preventing them from biting you. This is best done slowly and over the first few weeks of owning them.

Start by letting your mice get used to the way you smell, place your hand into their enclosure and let you mice approach you to sniff. For the first few days (even weeks depending on the personality of your mice) this will be the best contact to have with your mice.

Once you have built initial trust with your mice, they will feel less threatened by you. When handling them, move slowly and carefully, keep talking to your mice so that they feel calm.

Contentious care, gentle feeding and calm handling will allow you to build trust with your pet mouse over their lifetime. By showing your mouse that you are not a threat, they will be less likely to bite you.

Handle your mice gently, carefully and not too often. A common mistake made by owners of pet mice, is handling them too often. This can be stressful for your mice at first and this is bad for their overall health.

Instead, handle your mouse gently, carefully and, at least for the first few weeks, no more than once per day. Biting can sometimes be a signal from your mouse to you, that they have had enough of being held.

To avoid this from happening, start by handling your pet for short amounts of time. As your mouse gets more and more used to this, you can extend the time you handle them for. Be aware, that it can take weeks to build up to this.

Be guided by your mouse. Mice tend to have distinct personalities. Your mouse may be quite sociable and enjoy this interaction with you, or your mouse may be the shy and reserved type.

Either way: you know your pet best. You will be able to pick up on their behavioural cues and know when to return your pet mouse to their enclosure.

Handling, softly petting and stroking your pet mice is a great way to interact with them, and can keep their minds stimulated. Handling your pet mouse can help to prevent boredom. Knowing when your mouse has had enough of being held is key to avoiding them biting you.

Wash your hands after giving them treats. Tasty treats can encourage your pet mouse to interact with you and are a great way of building trust with your pet.

However, if your fingers smell of the treats you have been feeding you mouse and then you go to stroke them or pick them up, your mouse may mistake your fingers for the treats and accidentally nibble you!

To prevent this from happing, simply rinsing your fingers after feeding you mice treats can stop the confusion by getting rid of the smell.

Keep your mice calm and entertained. Stress can be harmful to mice. They are small and fragile creatures so stress can be damaging to their health. There are so many things an owner can do to reduce the stress their mice feel.

If a mouse is stressed or feels scared, they may bite. By providing your mouse with a safe and cosy home in a suitable and quiet area of your home can help to minimize their stress.

Try to avoid exposing your mouse to loud, unexpected sounds as this can cause them stress. Instead, when handling your pet mouse, speak in a soft calm voice to them as they will find this soothing.

Providing your mouse with enough food can also help to minimise stress. We know it sounds crazy but just like humans, mice can suffer from hanger!

It is also important not to interrupt your mice when they are eating, as this can result in a bite from your pet too. Instead, choose a suitable time to handle your pet, preferably not whilst they are eating or sleeping, the early evening usually works well.

What Happens If A Pet Mouse Bites You?

In the occurrence of your pet mouse biting you, you may have concerns about what might happen. This is totally normal.

An internet search will often draw up horror stories of sickness and disease, but let us reassure you, if a pet mouse bites you, it is usually not that dangerous.

If you do receive a bite from your pet mouse it may just feel like a sharp pinching sensation. In some cases, a bite from a pet mouse may pierce the skin and draw blood. If this happens be sure to disinfect the bite thoroughly and dress to protect it from germs.

However, if you are bitten by a non-domesticated or wild mouse, it is always best to seek medical advice as there is a risk of wild mice carrying disease.

The same applies for if the pet mouse you are bitten by doesn’t belong to you.

You should monitor your bite to check it is healing properly. In the unlikely case that your bite becomes infected, we would recommend seeking the advice of your doctor.

How Do I Get My Pet Mouse To Stop Biting?

Pet owners often wonder if they can train their pet out of less desirable behaviours such as biting. Generally speaking, mice are not pets you can train. However, there are certain things an owner can do to prevent biting from happening.

As opposed to training, encouraging your pet mouse not to bite is more about getting them used to interacting with you. Start by slowing introducing them to your scent. This familiarity can help your mice not to see you as a threat and will allow you to handle them without scaring your mice.

Minimising the stress your mice feel when being fed or handled is key to getting your mouse to stop biting. When lifting your mouse, gently cup your hands around them rather then grabbing at them. It may also be a good idea to stroke them a little first to let them know that you mean them no harm.

You could also try incentivising handling with a tasty treat for your pet mouse! They will associate interaction and handling with the delicious treat and may even begin to show enthusiasm for being handled.

Do Mice Like Being Petted?

Mice, by nature, are social creatures. Interaction can provide stimulation for your pet mouse and help prevent boredom. If the petting is calm, gentle and soothing, chances are you pet mouse will like this.

To make petting an enjoyable experience for both you and your pet mouse, try to pet them when they are active. Owners should avoid waking their mice if they are sleeping and should also avoid interrupting their meal times.


Pet mice can enjoy being handled if they feel safe and have trust with their owner. Pet mice may bite if they feel scared or threatened.

To prevent your pet mouse from biting you, invest time in building trust with your pet. Allow them to get used to you by sniffing you and accepting food that is hand fed to them.

Try handling your pet when they are active and have had some food. Avoid waking them from sleeping in order to hold them.

Related Questions

Is it safe to have a pet mouse? Yes, it is generally considered safe to own a pet mouse so long as you get one from a pet store. These mice will have had their required vaccinations/shots and will have been raised in sanitary conditions. It is not safe to take care of a wild mouse or one in which you catch. This is because mice, like other rodents, can carry germs that can cause illness. Either way, it is imperative that you clean the cage of your mouse regularly to stop the buildup of germs, and bacteria. You will also need to clean your hands following any time that you handle them or touch items in their cage.

Do pet mice bites hurt? A pet mouse bite may cause some mild pain and discomfort. This is likely to be felt at the moment of contact. The front teeth of a mouse are particularly sharp and may pierce the skin.