Mammals
Glands and hair
Feeding and digestion
Mammary glands: produce and secrete milk that nourishes developing young.
1-they have a daily intake of food to maintain constant body temperature.
Functions
Camouflage
Insulation
Endothermy
Sensory devices
Waterproofing
Definition: regulation of body temperature by changes in animal's metabolism.
They produce body heat internally
Defense
mammals get their energy from breaking down food
Structure: Made of keratin, a fibrous protein. Longer protective guard hairs, and shorter insulating under hair
2-they are divided by the type of food they eat:
insectivores"insects & small invertebrates"
herbivores "vegetation"
carnivores "mostly herbivores"
omnivores "plants and animals"
cannot digest cellulose
Some herbivores have bacteria in their gut that break down cellulose.
teeth reveal life habits
Carnivores use canines to stab and premolars to slice and shear meat.
Incisors of insectivores are long and curved, functioning as pincers in seizing insect prey.
click to edit
Raghad Bajouda
Rahaf Aloqail
Aljoharah AlShwaish
Refal Alamry