The cheetah is the fastest land animal. It can reach speeds up to 70 mph (113 km/h) in short bursts covering about 1,500 feet (460 meters). Cheetahs have specialized adaptations: a flexible spine, large nostrils, and non-retractable claws for traction. What is the fastest land animal?

The blue whale is the largest animal ever to have lived on Earth. It can grow up to 100 feet (30 meters) long and weigh up to 200 tons (400,000 pounds). Its heart is the size of a small car, and its tongue weighs as much as an elephant. What is the largest animal on Earth?

The giraffe is the tallest land animal. Males can reach up to 18 feet (5.5 meters) tall. Their long necks (about 6 feet / 1.8 meters) allow them to eat leaves from tall trees (acacias). Giraffes have the same number of neck vertebrae as humans (7), but each vertebra is much longer. What is the tallest land animal?

The sailfish is the fastest fish in the ocean, capable of speeds up to 68 mph (110 km/h). Its large dorsal fin (sail) can be raised to intimidate prey or reduce drag when folded. What is the fastest fish?

The ostrich is the largest bird in the world. It can grow up to 9 feet (2.7 meters) tall and weigh up to 350 pounds (160 kg). Ostriches cannot fly, but they can run at speeds up to 43 mph (70 km/h). They lay the largest eggs of any bird (about 3 pounds / 1.4 kg). What is the largest bird?

The elephant is one of the longest-living land mammals, with a lifespan of 60-70 years. However, the longest-living mammal is the bowhead whale (over 200 years). Among land mammals, elephants and humans are among the longest-lived. Which land mammal can live up to 70 years?

The inland taipan (Oxyuranus microlepidotus) is the most venomous snake in the world. A single bite contains enough venom to kill about 100 adult humans. However, it is very shy and lives in remote areas of Australia. What is the most venomous snake?

The kangaroo rat (a small desert rodent) can survive without drinking water. It gets all the water it needs from the seeds it eats (metabolic water). It has highly efficient kidneys that produce very concentrated urine. What animal can survive without drinking water?

The giant squid has the largest eyes of any animal. Its eyes can be up to 10 inches (25 cm) in diameter – about the size of a dinner plate! These large eyes help it detect light and movement in the deep, dark ocean. What animal has the largest eyes?

Axolotls (a type of salamander) can regenerate entire limbs, tail, spinal cord, heart, and even parts of their brain without scarring. They are studied for regenerative medicine research. What animal can regenerate body parts?