Inconsistent uncertainty

On two occasions on one day, this squirrel seemed unperturbed by my presence. Then, it decided I was a bad thing, and fled.

What led it to tolerate me at some points and not at other points? I suppose hunger played a part. Or maybe it could only manage to be brave for a limited amount of time?

I hate to recall the poor blind squirrel and the little baby with neurological damage. It must be nicer to be a rat and live in a family than to be a solitary squirrel who is scared of so many things, yet so clever and curious.

I guess I am a bit of a squirrel.