From left to right: a rat, a house mouse and a wood mouse. 

Many kinds of small mammals live in parks. These animals are usually relatively shy and can therefore be hard to find. However, especially the rat and the house mouse are common in all cities. 

The house mouse has adapted to life near human habitation, whereas the rat can also venture out to the park in search of food. Wood mice are usually found in forests, but they can also be seen in parks. 

All of the small mammals listed above are rodents, and all of them have the following characteristics: