Pretty much for the same reasons as us - it's simply nature.
Dinosaurs also had a four-chambered heart.
Unlike mammals, crocodile's right ventricle pumps blood throughout the body.
Such a heart perfectly separates blood going to the lungs from that going to the body, which is a requirement for the high blood flow rates and high metabolic rates characteristic of warm-bloodedness. However, living crocodiles are cold-blooded, so it didn't make sense for them to have a warmblooded heart - a mystery!
A mouse has four heart chambers, similar to other mammals. These chambers include two atria and two ventricles, which work together to pump blood throughout the body.
The heart of fish have two chambers. The heart of reptiles and amphibians have three chambers. The heart of mammals have four chambers.
Four - left and right atrium and left and right ventricle
Alligators have a 4 chambered heart, just like birds and mammals
The heart has 4 chambers. The "collecting chamber of the heart", or the atria , is the two chambers that are located above the other two chambers. It carries the responsibility in helping to pump the blood out of the chambers and making sure no blood pumps back in.
i think it is 4 chambers in the Human Heart
The bird's heart has 4 chambers.
4 heart chambers
There are 4 chambers to the heart.
no. the heart only has 4 chambers
4 hobbits in the fellowship (Horse Isle) WiseLeadMare (dun/grey)
A cats heart has four chambers, like humans.
There are four chambers in a human heart.
A sheep heart has four chambers.
There are 4 chambers in a bird's heart.
snakes have a three-chambered heart - 2 atria and 1 ventricle
There's 4 heart chambers in a human, which is a mammle