Behavior and Training

Natural Behaviors

Small animals exhibit a few instinctive behaviors that are part of their genetic makeup. Understanding these will help you effectively manage your pet's care.

Nocturnal. Most rodents are nocturnal, which means they are active at nighttime. Mice in the wild are nocturnal, but domesticated mice have been bred to be active during the day and at night. Rodents do best when they maintain 12-hour cycles for their body rhythms, with a half-day of light and a half-day of darkness. You will not be able to train your pet to change its natural cycle. The best way to accommodate a nocturnal pet is to set up your daily routine so that you can engage with your rodent, clean the cage, and take care of other chores in the evening. When you wake up in the morning, you can clean out the remaining food and soiled substrates and, if needed, provide a second meal about the time your pet is ready to go to sleep.

Burrowing. Burrowing provides a safe environment for rodents, away from predators in the wild. They can rest, sleep, or hide without fear for their lives. Burrowing is important to your pet's health, which is why it is essential to provide a thick layer of substrate in the cage and keep it clean and dry. Nesting is another important aspect of burrowing. This is how a rodent prepares its bed for sleep or, during reproduction, prepares for the arrival of a litter. Be sure to give your rodent soft material to shred and use to create its nests. Paper towels are the least abrasive material, which is particularly good for tiny, pocket-sized animals. For larger rodents, recycled paper can also be used.

Hiding. To survive, rodents have to have hiding places—dark corners where they cannot see or be seen by predators. This remains true even in the safety of a cage. Be sure to provide your pets with a hiding box that is dark, has one or two small entries, and gives your rodents privacy and a sense of safety. Many small animals will sleep in their hiding boxes as well. Make sure there is enough room for the animal to lie down and turn over.


Problem Behaviors

Aggressive or problematic behaviors in rodents point more to difficulties with humans than with animals. Usually, these are normal behaviors given the animal's activity and stage in life. Here are a few common behaviors that might require special attention if exhibited by your pets:

Nipping/Biting People. Most rodents won't nip or bite people unless they are given a reason. The most common reason is that people wake these nocturnal creatures from their daytime sleep, frightening them. Just don't do it, or if you have to wake them, be gentle, speak softly, keep the room dark, and give them time to awaken. The less surprising the effort, the more likely your pet will respond peaceably. Other causes for nipping or biting people are when rodents are handled by unfamiliar people. Give them time to get to know each person's scent and get comfortable with anyone who handles them. They adapt pretty quickly but do need the time to feel comfortable.

Aggression with Other Rodents. Aggressive behavior in rodents, including nipping, biting, and fighting, often occurs with the onset of sexual maturity when animals are not spayed or neutered. Increasing levels of hormones and natural courting behaviors can lead to territorialism, mostly among males. The best way to avoid these problems is to have your small animals spayed or neutered.

Aggression also occurs when multiple males that were not litter mates share a cage. A completely new introduction of a companion requires time. The pets should be isolated from each other, followed by an exchange of environments while they get to know each other's scents. This is followed by a period of introduction through adjacent cages where each has its own safe space and can gradually get to know the other. When all signs of aggression are gone, you can try placing them in the same cage, but watch for signs of aggression for at least one month. If they are not fully familiar or comfortable, they could begin fighting and may need to be separated for a while longer.

Apart from these two circumstances, as long as there is enough food and space for all your pets and they are kept on a routine cycle, it is unlikely that they will act aggressively toward each other.

Lethargy. Rodents are active creatures. When they don't spend a lot of their time doing, there is a problem. The first thing to do is rule out a health problem by taking your pet to the vet. If the cause isn't health-related, it probably results from boredom, loneliness, or lack of engagement. You have to provide small animals with activities that allow them the physical, mental, and social stimulation they need for healthy and comfortable lives. You may need to increase the time you spend with your pet and add new toys to their environment to help them overcome this lethargy.

Barbering. Some rodents experience areas of hair loss as a result of chewing on their coat or having another rodent chew on their coat. Sometimes this behavior is a way of demonstrating the social pecking order in a community of small animals. It may also be a sign of a health problem, so be sure to get your pet checked if you see signs of barbering.



Small animals learn new behaviors through a system of rewards, and the rewards are always treated. Use treats to help your pet socialize with people, leave its cage and learn tricks. Negative reinforcement does not work with rodents. Punishing them simply leads to stress and fear and it doesn't take a lot for these levels to be fatal. To get your small animal to behave in certain ways, you'll need patience, a gradual approach, consistency, and lots of treats.


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