Sika deer
The Ninomaru gardens and other areas such as the Ofukemaru have a wide variety of flora. In spring, Japanese cherry, wisteria, camellia, and peony bloom. In the summer it is iris, crape myrtle, plantain lily, and hydrangea; in autumn the confederate rose, Japanese quince and crape myrtle, and in winter the Japanese witch hazel, Japanese quince, wintersweet, and Japanese plum that bloom. During the summer, Sika deer can be observed grazing in the moats that are dry and covered with grass. Various birds, such as ducks and songbirds, inhabit the castle grounds as their sanctuary in the middle of the city.