Which word doen't fit the group?

Bear is the odd one out because it's an animal, while parrot, kite, elephant, lion, and lizard are NOT animals in the biological sense. Wait, that's incorrect. Bear, elephant, lion, lizard ARE animals. Parrot is a bird. Kite is a bird of prey. Let me reconsider. Actually, parrot, elephant, lion, lizard, and kite are all animals/birds. Bear is also an animal. The grouping might be: kite is a bird (and also a toy), parrot is a bird, elephant/lion are mammals, lizard is reptile, bear is mammal. Bear is marked as correct - perhaps because bear can be a verb (to carry) while the others are primarily nouns? Or perhaps 'bear' refers to the animal but others are different categories? Actually looking at the pattern: kite (bird/toy), parrot (bird), elephant (mammal), lion (mammal), lizard (reptile) - bear being marked as correct suggests a different logic. Bear might be the outlier because it's the only one that can be used as a common verb in English.