[com2kid]

> Do wild animals "push" themselves? No. So theres your answer.

Have you ever watched squirrels go after food in a feeder? Lots of YT videos of people setting up insane obstacle courses that squirrels learn to run through.

Some breeds of dogs are infamous for how hard they work, collies being one.

Heck some species, such as salmon, rely on do or die as the very key of their survival.

[ndiscussion]

But we already have big macs for $2, that's the difference. When squirrels encounter a big fat feeder with no obstacles, they take it easy.

[TeMPOraL]

Maintaining a persistent supply of $2s for big macs is a different story, though. Dollars don't grow on trees, and neither do houses.