Spider-Kitty
Pets are usually considered as an essential part of the family because they keep the family close together. When there is something new in the house, say a piece of new furniture or feature, they are also considered as they might be a risk to these features or pose a threat to them.
Of course, we don’t want to keep them inside or outside forever; that is why small doors are installed to make it easy for them to get in and out of the house. However, this guy might have worked on the wrong side of the door, as the small door he made for his kitty is now a door for a spider-kitty.