Whale is a mammal hence its outer covering should be hair.
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Skin - it is a mammal
Scale
skin
Amphibians do not have outer covering.
exskeleton
NO
hair
A lot of animals have hard body covering which makes them hard to become prey. However, animals such as hippopotamus, rhinoceros, and elephants have a hard cover of skin on their body.
i have know idea
we identify them by their outer covering, behaviour and their stances
yeah if they have skin they have to have a outer covering or they will die from getting sick
The animals are,bears,cats,dogs,bats,dolphins and whales.
epithelial
The outer shell on animals is called an exoskeleton. This exoskeleton is there because these animals do not have a spine like humans do, so they must have the shell to protect them from harm.