What the science is

Bats are birds, that's where it's at,
and whales are fish, you sea.
Don't tell me what the science is,
it just confuses mea.

A tick's a bug, a fly's a bug,
and so are spiders, too.
And if you contradict this,
I hope they all bite you.

But a horse is a horse, of course, of course ...

It's coarse to beat him in the head
When you should know that he is dead,
And shouting at him, cold and stiff,
Not showing sympathy or remorse,
Will only make your own voice hoarse.