Marine mammals, the largest known animals to have ever existed.
Dogs are the domesticated subspecies of grey wolves.
Moles are small subterranean mammals with modified, spade-like forelegs.
Otters are semi-aquatic predatory mammals.
Bats use ultrasound to navigate and hunt for prey.
A mammal with features typical of reptiles: it lays eggs and has a cloaca.
Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.
Reindeer are the northernmost deer species.
Large, extinct species of cats named after the shape of their large canine teeth.