Relier Pairs Vertebrates FeaturesVersion en ligne Vertebrates basic features par Rubén Herradon Parra 1 Mammals can be carnivores, herbivores and omnivores. 2 Most mammals have four legs, some of them have flippers and wings. 3 Monotremens are special mammas because they are oviparous, it means they lay eggs. 4 Most mammals have fur covering their bodies. 5 Baby mammals drink their mother´s milk. 6 Mammals breathe with teir lungs. 7 Most mammals are viviparous.