Do giraffes have the biggest heart?
The tallest ever giraffe was 19.2 feet tall! First of all, to pump blood all the way up its long neck, the giraffe needs a very strong heart. In fact, its heart weighs 26 lb (12 kg), making it the biggest heart in the animal kingdom!
The legs of a giraffe are also 6 feet (1.8 meters) long. The back legs look shorter than the front legs, but they are about the same length. A giraffe's heart is 2 feet (0.6 meters) long and weighs about 25 pounds (11 kilograms), and its lungs can hold 12 gallons (55 liters) of air!
- These muscles cause the tube to expand and contract, producing a worm-like peristaltic pumping action. Most of the time, the heart pumps the mosquito's blood—a clear liquid called hemolymph—toward the mosquito's head, but occasionally it reverses direction. The mosquito doesn't have arteries and veins like mammals.
- about 25 years
- Baby giraffes can be killed and eaten by hyenas. But the only animal that will kill and eat an adult giraffe is a lion. However, lions do not often tackle giraffes because they are so large. One lucky kick by a giraffe's long, powerful hind legs could cripple or kill a lion.
There is such a thing as a pseudoheart, and earthworms are said to have pseudohearts. Similarly, a cockroach has a "a single structure with 12 to 13 chambers." Cephalopods (cuttlefish, squid, octopus) have three hearts: two for the gills and one central heart, and that is the correct answer.
- Also known as the Arctic whale, the bowhead is by far the longest living mammal on Earth. Some bowhead whales have been found with the tips of ivory spears still lodged in their flesh from failed attempts by whalers 200 years ago. The oldest known bowhead whale was at least 211 years old.
- sperm whale
Updated: 6th December 2019