So, if the plants on which the caterpillar feeds are destroyed, not only the caterpillar is threatened but the bird and fox too. Artiodactyls Unlike horses, rhinos and tapirs, artiodactyls have an even number of toes. Pigs, hippos, camels, and cows are artiodactyls. All but pigs and hippos 'chew the cud', like cows. This means they chew food again after first partially digesting it in a special stomach.
Deer are browsers, feeding mainly on leaves.
Like cows, they are ruminants - that is, they chew the cud. Buffaloes belong to a large family of artiodactyls called bovids, which includes cows and antelopes. Male bovids have big horns which they sometimes use to defend themselves. The giant pandas of China have a special pad on their front paws, called a sixth finger, for holding bamboo stems. The bamboo shoots they eat are not very nutritious, so pandas have to spend 10-12 hours a day feeding.