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Why some animal have wings and why some not?
some animals develop wings. others get it from traits. such as genetic traits.others well i dont know about that
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Why do some animals mate and some do not?
Because some don't have the ability. That's true for individuals, As a species, all multi-celluar animals must mate or else become extinct.
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What are some animals that are pet animals?
Well the Dog,Cat,Snake even though it may be a reptile I have on to pet,and also a Horse,Cow,Chicken,Bird and many many more :)
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What are some animals in animals?
Worms, fleas, ticks and other parasites
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What animals are some animals that are endangered?
polar bear, black-footed ferret,