Cell walls !
The common protein found in all animals is collagen.
They are all animals
All animals have to go throw pregnancy first which is common in all female animals.
Yes, all chordates have a tail sometime during their development, although its not necessarily seen when the animal is adult. In many animals its a vestigial structure
They all eat have eyes or
Deserts occur on all seven continents and there are no animals common to all.
they all have a cell membrane
2 common animals are the raccoon and the bear
All animals in antarctica have fat deposit under their skin.
Teeth because all animals need to chew their food.
they all have brains
All plants and some protists share a cellular structure characterized by cell walls made of cellulose, which provide rigidity and support. They possess chloroplasts containing chlorophyll, enabling photosynthesis to convert sunlight into energy. In contrast, animals lack cell walls and chloroplasts, relying on heterotrophic means of obtaining energy through consumption. This fundamental difference in structure and function distinguishes plants and certain protists from animals.