A Bear is an extinct land mammal that lived in what is now Eurasia and the Americas during the Holocene. They were probably either pursuit or ambush predators that mainly preyed on "Pigs", "Cows", "Humans", and other animals that lived in their environment. They ranged from about the size of a "Dog" to about the size of a "Car", depending on a species. They were probably solitary animals as some fossil beds suggests.