(i) In kingdom Animalia, all the members are multicellular eukaryotes with tissue differentiation.
(ii) They are heterotrophic with ingestive mode of intake of food.
(iii) They possess a well-developed nervous system.
(iv) Muscular system is also well developed for locomotion.
(v) They exhibit sexual reproduction. Sponge, molluscs, fishes, birds, reptiles and mammals all belong to kingdom Animalia.