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Gnawing Mammals

Gnawing Mammals. Mammal Characteristics Warm – Blooded Usually have a protective coat of hair and a bony skeleton Babies are fed milk with mammary

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Page 1: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Gnawing Mammals

Page 2: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Mammal Characteristics

Warm – Blooded

Usually have a protective coat of hair and a bony skeleton

Babies are fed milk with mammary glands

Page 3: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Gnawing Mammals Sometimes referred to as rodents Have 4 large incisor teeth in front of their

mouth Teeth never stop growing

Must gnaw on something or teeth become overgrown

Most diverse group of mammalsMany different species that live in different

environments

Most are herbivores

Page 4: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

House Mouse

Page 5: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

House Mouse

6 – 8” in length .5 to 1 oz in weight Gray or brown in color Long, hairless tails Live in buildings during cold seasons Live anywhere food and shelter can

be found in same place

Page 6: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

House Mouse

Begins reproducing at 2 months of age, capable of having 8 litters a year

Litter sizes range from 3 to 11 young

Born naked, helpless, and blind Important food source for predatory

animals and birds

Page 7: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Muskrat

Page 8: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Muskrat

Grows to 24” from nose to tail at maturity

Nocturnal animal that inhabits the freshwater biomes of North America

Does not hibernate Flat hairless tail that it uses as a

rudder when it swims

Page 9: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Muskrat

7 or 8 offspring in each litter Young muskrats swim when they

are 3 weeks old Often trapped or are preyed upon

by eagles, otters, and minks Seldom grow to be older than 4 yrs

old

Page 10: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Eastern Fox Squirrel

Page 11: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Eastern Fox Squirrel

Largest squirrel in North America 19 – 28” long 1.5 – 3 lbs Eats nuts, fruits, corn, roots, and insects 2-4 are born in early spring and can live

to 6 years old Range in color from rusty yellow to black

Page 12: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Woodchuck

Page 13: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Woodchuck A.K.A. Groundhog 20-27” long from head to tail Weighs 5-10 lbs. Brown in color Eats green plants during spring and

summer Hibernates from Sept. until spring Prefers open woodlands and meadows Causes problems for farmers

Eats crops and mounds up dirt

Page 14: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Black-Tailed Prairie Dog

Page 15: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Black-Tailed Prairie Dog

Yellowish brown in color with a black-tipped tail

Plains dweller that builds dams around the entrance to its burrow to prevent flooding

Range goes on narrow band from Texas to Canada

Page 16: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Black-Tailed Prairie Dog

14-17” long from nose to tail Weigh 2-3 pounds Young are born in litters of 3-5 in

March and April Very social animals

Greet and graze peacefully together

Page 17: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Cottontail Rabbit

Page 18: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Cottontail Rabbit Live in different environments in

North America ranging from deserts to wooded areas

Diets revolve around grass and other vegetation

Short legs (cannot run well) Brown to gray in color 14-17” in length Prefer bushy habitats

Page 19: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Cottontail Rabbit

Hide from prey by sitting very still 4 to 7 young in litter 3 to 4 litters / yr

Page 20: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Porcupines

Page 21: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Porcupines

Known for its sharp quills Cause damage to trees and shrubs

as they gnaw the buds and bark for foodOften kills the trees if bark is gone

Chews on anything that is salty, including human property

Page 22: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Beaver

Page 23: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Beaver

Hard-working animal Dam-building skills prevent soil

erosion and stores water Webbed hind feet Long, flat tail which helps in swimming When dangers approach, beavers slap

their tails on the surface to signal to other members of the colony

Page 24: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary

Beaver

Long, flat tail which helps in swimming

When dangers approach, beavers slap their tails on the surface to signal to other members of the colony

3-4 feet in length and up to 70 pounds Young are not mature until 2 years old Fur is reddish brown in color

Page 25: Gnawing Mammals. Mammal Characteristics  Warm – Blooded  Usually have a protective coat of hair and a bony skeleton  Babies are fed milk with mammary