Useful animals (excluding aquatic animals and organisms used in pest and disease control) in relation to

their environment; ecology; phenology;

Environmental biology; effects of external influences on biological processes in useful terrestrial animals;

Animal behaviour; communication; instinct; learning;

Habitat; animal population structure;

Climatic seasonal factors: hibernation, migration;

Community life, colonies, symbiosis, etc.;

For: animal resistance to climate, extreme conditions, see L74

aquatic animal ecology, see M40

conservation of animals, animal wildlife management, game reserves and surveys, game

hunting and sport fishing, see P01

ecology of organisms used in pest and disease control, see H10,  H20, L72, L73

pest ecology, see H10, L72