They need to in order to digest the leaves and the amount of energy they get to it, I believe. Somewhere along their evolutionary path, this group found it more beneficial to be like this and able to pass on such traits due to competition, etc.I've never understood the evolutionary point of animals that sleep 20+ hours a day. Why would something even evolve like that at all?
Slap fight!
n48E6BP
They need to in order to digest the leaves and the amount of energy they get to it, I believe. Somewhere along their evolutionary path, this group found it more beneficial to be like this and able to pass on such traits due to competition, etc.
Cow playing fetch
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