Endothermic WarmPermits high level of activity at (regardless of outside temperature) Females have Function: About Ex: cats, dogs, humans, dolphins, elephants, kangaroo, whale, bat, rabbit, beaver, wolf, seal, High Body In some, hair is reduced in size – All have an integument Contains: sweat, Breathe Excrete Separate Young (made by the mammary glands) Many These are areas from which individuals of the Will often resort to Rodents Ex: mice, squirrels, Have two razor Lagomorpha Ex: rabbits, All Hominids Ex: humans, gorilla, Insectivora Ex: Diet Carnivora Ex: weasels, seals, walruses, dogs, Highly Contain teeth Proboscidea Ex: Largest of Perissodactyla Ex: horses, donkeys, Often referred to as Cetacea Ex: dolphins, Limbs are modified Live in Skeleton Skeletal/bone make-up allows for: High Swimming climbing Movement of digits (fingers/toes) to Joints allow for Hair: Has Purpose of hair: Spines of porcupines— Hair of most animals— Vibrissae (whiskers)— Slightest movement indicates Moveable Fleshy Well-developed The largest brain in Cerebrum High evolved brain allows for highly developed memory and capacity to Highly elaborate Provide Senses: mammals with a high level of taste, smell, Most have Many Many will use Ex: Teeth Mammalian Mammals are Specialized teeth are both for variety of functions: Includes: grind, stab, scissor, Teeth, cont. Teeth in mammals come in Incisors, Not all Use this variety to eat Most placental mammals have between 20 and 40 teeth, while most As a general rule animals that feed on insects have more teeth than Contain a Separates Allows air passageway mammals to hold (and partially break down food) in Have Insectivores are Herbivores have many Groups: Have large molars Carnivores have Adapted for Other adaptations: Ruminants (cattle, bison, goats) Energy and Wastes Require much energy Produce a variety of Digestive If If tract mammals eats only Why? takes longer to eat only meat, Require 2 a organ adaptations for this: Diaphragm: Muscle that contracts and therefore Four-chambered heart: Separates blood into All have All have 3 groups of Mammal life cycles: 1. 2. 3. Marsupials: Placental: Develop inside % of mammals are this Placenta—organ which allows for nutrients, Placental, cont.: Gestation period—time that embryo Humans: 9 months, Elephants: , Mice: Mammary gland—young Ex: humans, dolphin, Marsupials: Give birth to small, immature young that Mothers can move around and look for food Ex: kangaroo, Monotremes: Mammals that Incubate Ex: