Sometimes the anaconda will hunt on land. The usual prey caught by the snake are birds, small mammals-deer, piccaries, and large rodents such as agoutis. Fish are a large part of the diet. Turtles and caimans are sometimes attacked. It is on record that a 25 foot anaconda killed and ate a 6 foot caiman.
Snakes have a special jaw attachment that allows an anaconda to swallow such a large animal.
A meal of this size will last the anaconda for several weeks. During this time the snake rests until the prey has digested. Few observations have been made on the breeding cycle. Anacondas are viviparous. From 20-40, sometimes up to 100 young are born.