This document outlines the key characteristics of mammals. It states that all mammals have 4-chambered hearts, fur or hair, are warm-blooded, and have mammary glands that secrete milk to nourish their young. Mammals also have incisors for biting, canines for tearing, and molars for chewing, following the dental formula I C P M. The document provides details on mammalian teeth and how different types of mammals use their teeth depending on whether they are herbivores or carnivores.

1. Intro. Mammals
By Mr. “I have fur too” Chapman

2. Mammals

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16. Characteristics
 All mammals have the following:
 1. 4 chamber heart
 2. Fur/hair
 3. Warm Blooded
 4. Mammary glands
 These are highly modified sweat glands that
secrete modified sweat called milk.
– Milk is rich in protein, carbohydrates, and other
nutrients.

17. Characteristics
 5. Mostly nocturnal, only about 10% are
diurnal.
 6. Teeth “ICPM”

18. Characteristics
 Teeth:
1 .Incisors - clipping or cutting (biting)
 2. Canines - tearing, puncturing, killing
 3. Premolars and molars - “cheek teeth”
for chewing.

19. Teeth
 Dental formula I C P M
 --- - -- - -- - ---
 I C P M

21. Use of teeth
 Herbivores - crushing
 Carnivores - slicing

22. THE END