Peanut the squirrel had to be put to sleep. The animal had over 600,000 followers on Instagram. His owner shares an emotional video on Instagram.

Wildlife rehabilitators can legally care for injured or sick squirrels, but the animals can't be pets in many states.

It would be too dangerous to remain torpor all winter, so these squirrels re-warm themselves every ten days or so to maintain brain function and sleep. They need to wake-up to sleep! We watched ...