How Well Do You Actually Know Animals? These Trivia Questions Will Tell You

The closest living relative to the T-Rex is the chicken. Not a crocodile, not a lizard, not any large reptile you'd expect. Birds are the direct descendants of theropod dinosaurs, and among living birds, the chicken's DNA has been found to share the closest measurable relationship with Tyrannosaurus rex.

Paleontologists confirmed this through collagen analysis of a 68-million-year-old T-Rex femur. That's the kind of animal fact that makes people stop mid-conversation.

These animal trivia questions and answers start accessible and get progressively stranger. Some are classics. Some involve animals doing things that don't seem physically possible. A few will change how you look at creatures you thought you already understood.

Easy Animal Trivia Questions

1. What is the fastest land mammal? The cheetah, reaching speeds up to 75 mph (120 km/h).
2. What is the largest living animal? The blue whale.
3. What is the only mammal capable of true flight? The bat. Flying squirrels glide - they don't actually fly.
4. What is the largest land animal? The African elephant.
5. What is the name for a group of lions? A pride.
6. What is the fastest bird? The peregrine falcon, which reaches speeds over 240 mph (386 km/h) when diving.
7. What is the tallest living land animal? The giraffe, growing up to 18 feet tall.
8. What is the largest rodent in the world? The capybara.
9. What do you call a baby kangaroo? A joey.
10. What animal is known for building dams? The beaver.

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Fun Animal Trivia Questions and Answers

1. What is the closest living relative to the T-Rex? The chicken - and birds in general.
2. Where do sea otters store extra food? In a pocket of skin under their armpits.
3. What is the only dog breed that cannot bark? The Basenji. It produces a yodel-like sound instead.
4. What male sea creature gives birth to its young? The seahorse.
5. How many bones are in a giraffe's neck? Seven - the same number as a human.
6. What is the deadliest animal in the world to humans? The mosquito, responsible for over a million deaths per year through disease transmission.
7. Which animal has the highest blood pressure? The giraffe, at approximately 280/180 mm Hg - about twice a human's.
8. What do you call a group of flamingos? A flamboyance.
9. What do you call a group of porcupines? A prickle.
10. What animal is the only one known to poop in cubes? The wombat. The shape is thought to help mark territory.

Hard Animal Trivia Questions

1. How long can a Greenland shark live? Up to 400 years, making it the longest-lived vertebrate known to science.
2. What is the world's deadliest spider? The Sydney funnel-web spider, though the box jellyfish is often listed as the world's most venomous marine animal.
3. Which animal has the most teeth of any land mammal? The giant armadillo, with up to 100 teeth.
4. What four species of animals typically die shortly after giving birth or spawning? Octopus, squid, Pacific salmon, and common mayfly.
5. What is the difference between a venomous animal and a poisonous one? Venomous animals inject toxins through a bite or sting. Poisonous animals are harmful when touched or eaten - the toxin is delivered passively.
6. How long is the gestation period of an African elephant? About 22 months - the longest of any land mammal.
7. What is the world's largest living bird? The ostrich.
8. How long can a sloth hold its breath underwater? Up to 40 minutes - longer than a dolphin.
9. What fish has the longest known lifespan? The Greenland shark.
10. What is the only marsupial found in North America? The Virginia opossum.

The pistol shrimp has one of the most extraordinary abilities of any animal on Earth - it snaps its claw so fast it creates a cavitation bubble hotter than the surface of the sun, lasting a fraction of a millisecond. Worth reading before any animal trivia night.

Animal Trivia: Group Names

Group names for animals are a consistent source of trivia questions because they're so unexpected.

1. What is a group of crows called? A murder.
2. What is a group of owls called? A parliament.
3. What is a group of cats called? A clowder.
4. What is a group of hyenas called? A cackle.
5. What is a group of parrots called? A pandemonium.
6. What is a group of lemurs called? A conspiracy.
7. What is a group of butterflies called? A kaleidoscope.
8. What is a group of hippos called? A bloat.
9. What is a group of jellyfish called? A smack.
10. What is the national animal of Scotland? The unicorn. It's been the official national animal since the 12th century.

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Animal Trivia Questions: Sea Creatures

1. Which sea creature can change its gender? An oyster - they can switch back and forth multiple times during their lives.
2. How many hearts does an octopus have? Three: two pump blood to the gills, one pumps it to the body.
3. What is the largest fish in the ocean? The whale shark.
4. How deep did the Cuvier's beaked whale dive in the deepest recorded marine mammal dive? Nearly 10,000 feet (about 2,992 meters).
5. What is the most venomous marine animal? The box jellyfish - its venom can kill a human in minutes.
6. What is the world's largest living animal that is not a whale? Debated, but often cited as the whale shark (largest fish) or the giant squid among invertebrates.
7. Do sharks have bones? No. Sharks are cartilaginous fish - their skeletons are made entirely of cartilage.
8. What is the name of a group of fish swimming together? A school (or shoal, depending on context).
9. What is the only species of seahorse in which the male carries the eggs? All seahorse species - it's a characteristic of the entire genus.
10. Which animal has the largest eyes of any living creature? The colossal squid, with eyes that can reach 11 inches in diameter.

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The strangest deep sea creatures covers animals that exist at depths where light never reaches - some of them look like they were designed to be scary. For broader animal intelligence, smartest animals in the world ranks species by problem-solving ability, tool use, and memory.

The animals that mate for life list is a natural companion piece, and for younger audiences, animal trivia for kids covers the same territory at a more accessible level.