Foot - and - mouth disease affects animals with cloven hooves , such as cattle , pigs , deer , goats and sheep 口蹄疫感染偶蹄目动物，比如牛，猪，鹿，山羊和绵羊。
2.
Experts agree that hippos belong to the mammalian order artiodactyla , a group of even - toed , hoofed creatures whose extant representatives include camels , pigs and ruminants such as cows 哺乳纲中的偶蹄目动物，是因四肢的蹄为偶数而得名，现存于世界上的包括了牛这类反刍动物，以及骆驼和猪等。
