It doesn’t matter the size of the kitty, you give that guy a box and he’s gonna get in it. Ah, so comforting! Boxes appeal to our feline friends because they provide safe, defined spaces that are defendable and comfortable. Plus, cardboard is a good insulator, and kitties do like to be warm. You can see the bobcat (at least I *think* it’s a bobcat, no description given in the source) rub his cheeks on the box, leaving his scent to claim the space as his own.
The source for your hed gif is below.
PetMD: “Why Do Cats Like Boxes?” by Alison Gerken, DVM, 9/19/23
One of our cats likes boxes, but her real love is bags, especially mine.
He's gonna squeeze his way into that thing if it kills him.