This dog is obsessed with his tree trunk toy and will take it everywhere, and even falls asleep with it in his mouth.

The adorable clip filmed over a few months shows Mux the golden retriever playing with his tree trunk toy as well as taking it everywhere he goes.

"A montage of clips taken of my dog and his favourite stuffed toy. Usually, Mux destroys toys immediately, but this one has become his most prized possession. He takes it with him everywhere, sleeps with it in his mouth and even uses it as a pillow," the filmer told Newsflare.

The clip also shows the moment Mux's owners had to perform an 'operation' on the toy to fix it, all while Mux sat there watching intently waiting for his favourite toy to be ready to play with again.

A montage of clips taken of my dog and his favorite stuffed toy. Usually, my dog destroys toys immediately, but this one has become his most prized possession. He takes it with him everywhere, sleeps with it in his mouth and even uses it as a pillow. The end of the video has a hilarious surprise!