Mammals
Habitat
Land (+++)
e.g.
Humans
Bats
Aquatic (+)
e.g.
whales
Body
Limbs
Legs
Wings
Fins
Skin
with
Fur
Hair
Mandibles
with
Teeth
Carnivores
Canines
e.g.
cat, shrews (insectivores)
Herbivores
Molars
e.g.
rodents, voles (granivores)
Mammary glands
Milk
Breastfeeding babies
Vital functions
Nutrition
Breathing
Lungs
Interaction
Homeothermal
Steady internal temperature
Reproduction
Fertilisation
internal
Groups
Monotremes
Embryonic development in egg
Beak, no teeth
Occur in Oceania
Platypus & echidnas
Marsupials
Give birth to live & undeveloped young (a joey)
Embryonic development in uterus & mother's pouch
Occur in Oceania & America
Kangaroos, koalas, squirrel glider...
Placentals
Give birth to live & developed young
Embryonic development in uterus
Cosmopolitan
Primates, rodents...