I initially agreed an animal. If anything it may be two.

Watching it is one thing but if you scroll/scrub through it to when it first peeks out the right side of the tree the eyes are down below but there is something above it almost same colour of the tree so if an animal, maybe upside down you can see part of the body sticking out up top, and eyes below, then the eyes on the left side of the tree. So it’s either an inverted animal with reflective eyes, that peeked out one side then re-oriented and out the other side, or there are two animal.

People say raccoon for the head shape seems wrong. Definitely way more creeping scrolling through frame by frame.