Most birds -- and all birds that fly -- have semi-hollow bones. Most reptiles, however, do not.
Birds are the only things that have feathers and hollow bones.
Animals like insects, have exoskeletons-basically they have no bones, and only have tough,protective, often shell like skin. Animals like cats, dogs, horses, giraffes and and birds are all endoskeletons- they have bones, and those bones are internal (on the inside of the skin).
Practically all except for whales and dolphins, and marine birds if you count those as sea animals. Only mammals and birds are endothermic.
Yes, animals with a back bone are vertebrates. The only animal I can think of that has bones but doesn't have a back bone would be a sand dollar. See if anyone here can think of any others.
Birds are defined by unique characteristics, such as having feathers, beaks, and laying hard-shelled eggs. They also possess hollow bones, a high metabolic rate, and a specialized respiratory system that includes air sacs. Birds are the only living animals with the ability to fly.
because they are tiney birds
Birds are the only things that have feathers and hollow bones.
Animals like insects, have exoskeletons-basically they have no bones, and only have tough,protective, often shell like skin. Animals like cats, dogs, horses, giraffes and and birds are all endoskeletons- they have bones, and those bones are internal (on the inside of the skin).
Birds are the only creatures that are warm blooded and have wings. Not all birds, however, have hollow bones - most flightless birds do not have hollow bones.
Birds are not the only animals who live in trees.
No, animals have only two humeri (large bones in the forelimbs).
Yes, as in the only living animals, they are. However, feathered dinosaurs, the ancestor of birds, also had feathers.
There might be 1,000 animals that have bones but I only know some like cats, dogs and tigers.
They have hollow bones,only one ovary present
birds have only two legs.
No, all birds have them.
Nope. Plants do not have bones. Only animals- and not all animals.