Mammals

 Found in range of environments because they are endothermic and have diverse body plans  Dominant animal living in the current era  Over 4000 species  Smallest: hog nosed bat/ Shrew  Largest: Blue Whale  body structure  Body covered by hair  Specialized teeth for different diets  Canines: tearing  Incisors: cutting  Molars: grinding (especially plants; herbivores)  Range of foot structures:  Walk on foot, digits, or one toe (Ex. Hoof)  body function  lungs, diaphragm  four-chambered heart  endothermy  reproduction  internal fertilization  internal development in uterus  nourishment through placenta  mammary glands supply milk  MOST give birth to live young  Mammals placed into 3 groups determined by reproductive methods __ Monotremes __  egg-laying mammals  lack placenta  duckbilled platypus, echidna  Marsupials Pouched mammals  Found mainly in Australia and New Guinea  Kangaroos, opossums  Short gestation period Placental Animals  Young develop completely in uterus  Nourished by the placenta  __Gestation__: period of development inside the mother  Much longer gestation period than other mammals  95% of all mammals


 * Mammals **

In this specific article it talks about a specific mammal known as the howler monkey. These particular monkeys are also found in Central and South America. The reason why they are called the howler monkey is because, generally at dawn or late in the day they will begin to howl, kind of how wolves would do as well. The howl symbolizes territory to other monkey groups warning others that they are not welcomed. Their howls are so strong and powerful mainly because they have large throats and specialized, shell-like vocal chambers that help them increase the volume immensely. The males on the other hand are dominant when it comes to howling because their throats are generally twice the size of a female throat. Lastly their vocals can range to about three miles which helps send out a clear message that these monkeys mean business when it comes between their territory. ***Click on the link below to recieve the article*** []

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