A pet bedding contains: a body and a connecting assembly. The body includes a plurality of pads which are in connection together, and the body includes an accommodating room formed therein, a neck portion with a diameter smaller than the accommodating room, and an opening defined in the neck portion and communicating with the accommodating room. The connecting assembly includes a main connection strap and a plurality of auxiliary connection straps, wherein the main connection strap is horizontally wrapped around an upper end of an outer wall of the body adjacent to the neck portion and is longitudinally wrapped around two opposite sides of the outer wall of the body, and a flat pressed area is formed on two of the plurality pads of the body which are formed on an upper surface and a lower surface of the outer wall of the body.