In most species the cycle of fertilized development is typical of that in most mammals, but in some members of the weasel family there is a delay in development. The rest of carnivore anatomy is as varied as their habits. The senses of carnivores are all acute. Olfactory cues serve to find prey, locate predators and communicate to other individuals. Several odorous skin glands are present on many carnivores that aid urine and feces as signals to other individuals.
Vision varies with species and auditory sensitivity is usually sharp.
Social habits vary according to species. Some species form prides or packs, others form home ranges that are defended or shared. In some foxes, civets, Brown hyenas, farm cats and badgers social inclinations several adults may share the same home range. This can be identified as a spatial group in which individuals home ranges overlap more than would be expected by chance. Some urban badgers now collectively live in the same den together but forage alone because of a high density forage base.