​Reptiles generally have a three-chambered heart, while crocodile is an exception with a four-chambered heart. There are two atrium and two ventricles in the heart forming the four chambers.

Why does a crocodile have 4 chambered heart?

The crocodiles are only the reptile that has a four-chambered heart (two atria and two ventricles) because of the most complicated blood circulation of all vertebrates. They spent most of their time underwater, so this adaptation (four-chambered) helps to a reduced rate of circulation and save oxygen.

What animals have 4 chambered hearts?

Bird and mammal hearts have four chambers (two atria and two ventricles).

Do reptiles have 4 chambered heart?

Four chambered heart is found in the reptile crocodile. Although reptiles show three-chambered hearts generally. Thus, the crocodile is an exception to it.

How many hearts are present in crocodile?

Complete answer: Four chambered hearts are present in crocodiles. Four chambers present are namely two atria and two ventricles connected to the right and left aorta.

What animal has 9 hearts?


It is an octopus. Yes, the multi-tentacled creature that has always intrigued us has three hearts and nine hearts. Read on to know why. The two hearts of this creature are made for the gills and are used to pump blood.

What animal has 7 hearts?

Hagfish are the only animals that have a skull but no vertebral column. The hagfish ranks highly among the animals that have multiple hearts in terms of its sheer bizarreness.

What animal has 8 hearts?

The animal with eight hearts is Barosaurus.

Having eight hearts means that a lot of pressure is required for blood circulation in the body.

Can a person have 2 hearts?

Aside from conjoined twins, no human is born with two hearts. But in the case of extreme heart disease, called cardiomyopathy, rather than receiving a donor heart and removing yours, doctors can graft a new heart on to your own to help share the work. This is more commonly known as a piggy-back heart.

Do snakes have 3 hearts?

Most reptiles have three chambered hearts with two atria and one common ventricle.

Which animal milk is black?

Answer: The female black rhinoceros or Diceros bicornis give black milk. Explanation: Black milk is the slimmest milk containing very little amount of fat (0.2%) is produced by Black rhinoceros.

What animal has 25000 teeth?


A snail’s mouth is no larger than the head of a pin, but can have over 25,000 teeth (but these aren’t like regular teeth, they are on its tongue).

Which animal has pink milk?

Why Crocodiles Have an Extra Hole in their Heart

Do all animals have 4 chambered hearts?

The only exceptions are the 23 living species of crocodilians (alligators, caimans, crocodiles and gharials) who, like birds and mammals, have four-chambered hearts with two atria and two ventricles (Jones, 1996; Jensen et al., 2014).

What animal has 8 hearts?

The animal with eight hearts is Barosaurus.

Having eight hearts means that a lot of pressure is required for blood circulation in the body.

Do Frogs Have 4 chambered heart?

Frogs have a three-chambered heart. It consists of two atria and one ventricle.

Do cows have 4 hearts?

No. Cows don’t have four hearts. Cows have a single heart, just like every other mammal, including humans!

Do pigs have 2 hearts?

Pigs like other mammals have a four-chambered heart. The right side of the heart pumps blood to the lungs (pulmonary circulation), and the left side pumps blood out to the rest of the body (systemic circulation).

Do ostriches have 8 hearts?

Ostrich belongs to class of Aves, which possess 4 chambered heart (two auricles and two ventricles).