(Closest thing I could find to a red kangaroo) Pans over the kangaroo says something like here we see the Red Kangaroo in like a british accent like that one guy say that it's the largest form of Kangaroo then cut to another scene
Say that the Red Kangaroo lives in Australia. Say it lives in the desert and because of this it has special adaptations. If possible show a minute clip of a red kangaroo hopping then say that hopping is one of its adaptations.
Then explain how the hopping is an adaptation and how it helps them.
After explaining the first adaptation move to how it's insulated fur is an adaptation because of the environment.
Explain how the fur is an adaptation and maybe show a kangaroo in the shade because they do that too if it's too hot
Close out the documentary by saying that the red kangaroo survives very well in it's environment because of these adaptations