Which animal heart beats the slowest?

Which animal heart beats the slowest?

blue whale
The mammal which is presumed to have the slowest heartbeat of any warm-blooded animal is the blue whale (Balaenoptera musculus), with between 4-8 beats per minute.

What animal has 1000 hearts?

heart rate = A(Scale)b where b= -0.6 :

Which animal has the highest heart?

The blue whale (Balaenoptera musculus) has the largest heart of any living creature.

Which animal has no heart and brain?

Jellyfish
Jellyfish don’t have brains They don’t have a heart, lungs or a brain either! So how does a jellyfish live without these vital organs? Their skin is so thin that they can absorb oxygen right through it, so they don’t need lungs.

What animal have 2 hearts?

octopus
An octopus has one main, systemic heart that pumps blood to the whole of its body. But it also has two additional hearts, responsible for pumping blood over each of its gills.

Who is 3 animal heart?

giant Pacific octopus
The giant Pacific octopus has three hearts, nine brains and blue blood, making reality stranger than fiction. A central brain controls the nervous system. In addition, there is a small brain in each of their eight arms — a cluster of nerve cells that biologists say controls movement.

Which animal has no red blood?

Crocodile icefish take this to the extreme. Unlike every other known type of backboned animal, they don’t have any red blood cells — or hemoglobin — at all. It’s astonishing!

Which animal Cannot sleep?

The 7 animals that need barely any sleep to survive

• Elephants. You’d think one of the largest animals in the entire animal kingdom would need a solid 10 hours sleep, but these gargantuan creatures lead a sleep life that most of us would cringe at.
• Giraffes.
• Horses.
• Walruses.
• Deer.
• Sharks.
• Sheep.

What kind of dog has low heart rate?

However, in some instances SB is harmless and can even be beneficial as your dog’s heart doesn’t have to work so hard to move oxygen around the body. Some breeds of dog are more prone to developing SB, including cocker spaniels, dachshunds, pugs, and West Highland white terriers.

Which is the animal with the most hearts?

1 Pygmy Shrew. 2 Zebrafish. 3 Wood Frog. 4 Octopus. 5 Blue whale. 6 Giraffes. 7 Hummingbird. 8 Cheetah. 9 Dog. 10 Fairyfly.

Are there any animals that have no hearts?

By the way, seals eat squids, which, like octopuses, have three hearts. A manatee cuts its heart rate by half while on a long dive. There are also numerous animals with no hearts at all, including starfish, sea cucumbers and coral.

What kind of animal slows down its heart beat?

Plenty of animals, from bears to groundhogs, slow down their hearts when hibernating—but as far as we know, only wood frogs can stop the beat completely.