Need help! mysterious thing cought on webcam

So my friend and I were in a discord call, he went to go let his dog outside, when him and his dog are outside, I notice movement in the webcam, and I snap a screen shot.

https://cdn.discordapp.com/attachments/667480722621071380/668295217996365834/WEIRD_TING.PNG

of this, any one know what the hell this shit is?