 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: