MAMMALS

EndothermicWarm-Permits high level of activity at

(regardless of outside temperature)

Females haveFunction:

About Ex: cats, dogs, humans, dolphins,

elephants, kangaroo, whale, bat, rabbit, beaver, wolf, seal,

GENERAL CHARACTERISTICS

High Body

In some, hair is reduced in size – All have an integument

Contains: sweat,

GENERAL CHARACTERISTICS

Breathe Excrete Separate Young (made

by the mammary glands) Many

These are areas from which individuals of the

Will often resort to

GENERAL CHARACTERISTICS

Rodents Ex: mice, squirrels, Have two razor

Lagomorpha Ex: rabbits, All

Hominids Ex: humans, gorilla,

Insectivora Ex:Diet

CLASSIFICATION

Carnivora Ex: weasels, seals, walruses, dogs,

HighlyContain teeth

Proboscidea Ex:Largest of

CLASSIFICATION

Perissodactyla Ex: horses, donkeys, Often referred to as

Cetacea Ex: dolphins, Limbs are modifiedLive in

CLASSIFICATION

Skeleton Skeletal/bone make-up allows for:

High- Swimming climbing Movement of digits (fingers/toes) to

Joints allow for

MOVEMENT AND RESPONSE

Hair:HasPurpose of hair:

Spines of porcupines—Hair of most animals—Vibrissae (whiskers)—

Slightest movement indicates

MOVEMENT AND RESPONSE

Moveable Fleshy Well-developed

The largest brain inCerebrum - High evolved brain allows for highly

developed memory and capacity to

MOVEMENT AND RESPONSE

Highly elaborateProvide mammals with a high level of

Senses: taste, smell, Most haveManyMany will use

Ex:

MOVEMENT AND RESPONSE

TeethMammalian teeth are both

Mammals are

Specialized for variety of functions: Includes: grind, stab, scissor,

DIGESTION AND EATING

Teeth, cont.Teeth in mammals come in

Incisors, Not all

Use this variety to eatMost placental mammals have between

20 and 40 teeth, while most

As a general rule animals that feed on insects have more teeth than

DIGESTION AND EATING

Contain aSeparates air passageway

Allows mammals to hold (and partially break down food) in

DIGESTION AND EATING

Have many Insectivores areHerbivores have

Groups: Have large molars

Carnivores have Adapted for

Other adaptations:Ruminants (cattle, bison, goats)

DIGESTION AND EATING

Energy and WastesRequire much energy

Produce a variety of

Digestive tractIf mammals eats only

Why? takes longer toIf eat only meat,

DIGESTION AND EATING

Require a

2 organ adaptations for this:Diaphragm:

Muscle that contracts and therefore

Four-chambered heart: Separates blood into

RESPIRATION

All have All have 3 groups of Mammal life cycles:

1. 2. Marsupials:3.

LIFE CYCLE

Placental:Develop inside % of mammals are thisPlacenta—organ which allows for

nutrients,

LIFE CYCLE

Placental, cont.:Gestation period—time that

embryo

Humans: 9 months, Elephants: , Mice:

Mammary gland—young

Ex: humans, dolphin,

LIFE CYCLE

Marsupials:Give birth to small, immature young that

Mothers can move around and look for food

Ex: kangaroo, Monotremes:

Mammals that IncubateEx:

LIFE CYCLE