Hearts, Hearts, and More Hearts

How many hearts does a worm have?
Five
One
Four
How much blood does a human pump each day?
100,000 gallons
2,000 gallons
200 gallons
What animal has the largest heart?
Blue whale
Sperm whale
Elephant
How big is the largest heart?
As big as a house
As big as an average four-year old
As big as a small automobile
How many times does a human heart pump per day?
115,000
100,000
115,200
Which of these animals below have no heart?
Leopard
Moon jellyfish
Tiger beetle
Which of these animals can regrow parts of a heart if it's broken or lost?
Zebrafish
Giant anaconda
Human
How many heart chambers does a cockroach have?
4
13
10
Which of these animals can totally stop pumping blood?
Bald eagle
Pangolin
Wood frog
BONUS:How much does a seal's heart-pump decrease when it dives?
10 pumps a minute
50 pumps a minute
90 pumps a minute
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