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There are two main types of dog bears: One is the Borocyon robustum, which has long legs suitable for jumping activities and is similar to the modern wolf, the Amphicyon longiramus species , has a strong body and looks like modern bear. , according to the Florida Museum of Natural History.
Like today's dogs and bears, the dog bears are large. They can weigh only a few pounds or can weigh up to (450kg). It is believed that the early evolution of the sun bear was very small, just the size of the Chihuahua dog (one of the smallest breeding dogs in the world). As it continued to grow, its size seemed to grow bigger, according to the Field Museum in Chicago.
When evolving into large animals there are several benefits and disadvantages. While body size is getting larger and larger, it will allow them to hunt larger prey and higher food chain, they also need more food and reproduce more slowly.
" Their enormous evolutionary size shows that they can prey on many mammals and other animals. Fortunately, they are extinct before humans are present in the world ," Wilkins said.
Dog bears first appeared in Eurasian continent during the Eocene and Oligocene epochs (55.8 million to 23 million years ago), a time sufficient for warm weather and thick vegetation. Worldwide temperatures are about 30 degrees C (86 degrees F) in the Eocene world, according to the University of California Paleontology Museum.
Despite the cold temperatures in the Oligocene world, it is still quite warm and the vegetation flourishes in most locations around the world, including North America and Africa. The dog bear is extinct 5 million to 10 million years ago.
Dog bear teeth are formed to have an omnivorous diet , like the great bear and modern dog. Smaller bear's lures, which may be rodents, while larger sun bears, can eat larger animals such as wild pigs. In addition, dog bears can enjoy eating leaves and berries.