reproductive group of mammals that is the largest
placental
type of feather that is short and fluffy and next to the bird's skin
down feathers
pouched mammals
marsupials
teeth in the back of the mouth used for grinding
molars
mammals that have the ability to walk upright on two legs and have opposable thumbs
erect
short, soft layer of fur that provides excellent insulation
underhair
class to which birds belong
aves
food supply of an egg
yolk
largest order of mammals
rodentia
front teeth used for cutting
incisors
what a bird does to itself to spread oil on its feathers
preen
parent birds do to their eggs to keep them warm
incubate
type of feather that is long and that covers a bird and helps insulate it
contourfeather
meat eating mammals
carnivora
type of mammal that includes mice, rats, porcupines and squirrels
gnawing
structure where the exchange of food and gases occurs between the mother and the baby
umbilicalcord

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