Their [cats] effortless passing between the wild and domestic worlds suggests the kind of grace we need as a species to move between nature and culture.

~ Richard Mabey

Richard Mabey Animal Behaviour Cats Nature

at least some paleontologists believe that the demiseof the dinosaurs was accelerated by nocturnal predation on reptilian eggs by the early mammals. Two chicken eggs for breakfast may be all-at least on the surface-that is left of this ancient mammalian cuisine.

~ Carl Sagan

Carl Sagan Animal Behaviour Dinosaurs Evolution

The sleeping style of each organism is exquisitelyadapted to the ecology of the animal. It is conceivable that animals who are too stupid to be quiet on their own initiative are, during periods of high risk, immobilized by the implacable arm of sleep.

~ Carl Sagan

Carl Sagan Animal Behaviour Evolution Sleep