The best of the animal world:
1. The most cold-hardy bird: penguins. Penguins, known as the “ship of the ocean,” are one of the oldest swimming birds. They may have settled in Antarctica before Earth wore ice armor. An extinct species of tropical penguin has been discovered off the southern coast of Peru. This tropical penguin stands about 3 feet tall, about the same size as modern emperor penguins. They lived in ancient times around 42 million years ago and are one of the oldest known species of penguins.
2. The animal with the warmest fur: the polar bear. The world's largest land carnivore, also known as the polar bear. The skin is black and the hair is usually white due to their transparent hair. They also have yellow and other colors. They are huge and fierce. Vision and hearingpolar bears are equivalent to those of humans, but their sense of smell is extremely sensitive, seven times that of dogs. Their fastest running speed can reach 60 km/h, which is 1.5 times that of the 100 meter world champion.
3. The animal with the longest hair: the musk ox. The survival rate is very low. Due to its excellent fur, it was hunted in large numbers and almost disappeared after protection, the population recovered; It is distributed in northern North America, Greenland and other parts of the Arctic, and is the northernmost ungulate.
4. Largest land mammal in history: the giant Junggar rhino in the Tianshan Mountains. The Junggar rhino is the largest land mammal in history, with a total length of 5 to 12 meters (nose to tail). The greatest body length is about 8.23 meters, its shoulder height can reach 5.28 meters.its neck is vertical to the ground. When growing, the height can reach 3 to 9 meters, and the shoulder height is 1.9 to 5 meters.
5. The most primitive egg-laying mammalian animal in existence: the platypus. The platypus is one of the most primitive mammals. It is an incompletely evolved mammal with very few species. There is only one animal in the same genus, the platypus, and it is also one of the lowest mammals. George Shaw was named the platypus specimen in 1799 after he thought the creature was the product of a hoax.
Reference materials:
The best in the world (world record) - Baidu Encyclopedia