Cold blooded animals or poikilotherms are fishes, amphibians and reptiles. Warm blooded animals or homeotherm are aves and mammalia. Reptiles have dry cornified skin which is non-glandular. Animals where sexes are separate are called dioecious animals like Ascaris ( Aschelminthes) , Arthropods, Molluscs, Echinodermates, Hemichordates and Chordates.