- Temperatures affect the concentration of animals. Only especially adapted organisms can live in extreme temperatures.
- Water is needed for vital functions, so only animals that can conserve water are found in deserts.
- Breeding sites are needed for growth and protection of young. Some need specific areas to breed. High animal diversity is found in areas with varied topographical nature.
- Food supply is important for survival since animals are heterotrophs. High animal diversity is once again found in the rain forest.
- Some animals are territorial and need large areas for feeding, mating, and protecting their young. Some are territorial during breeding season and occupy areas to prevents others from approaching them. There is high animal distribution where there is room to occupy territory and defend against other members of the species.