Personally, I would go with the biggest you can afford. The large, in my opinion, would be the best bet. X-large is probably too big, medium might be a bit small. Watson has a bed similarly sized to the large one you're looking at... sometimes he lays in it, sometimes he half lays in it, sometimes he lays on the floor with only his head in the bed. But, when he lays entirely in the bed, it's the perfect size. He's comfortable curled up, he's comfortable stretched out...
I guess I would think of it like a couch. You sit on it sometimes, you lay on it sometimes, you stretch your legs out on it sometimes... so you get it big enough to allow all of that to happen comfortably.
Short answer: I'd go with the large.
I guess I would think of it like a couch. You sit on it sometimes, you lay on it sometimes, you stretch your legs out on it sometimes... so you get it big enough to allow all of that to happen comfortably.
Short answer: I'd go with the large.