I've seen others who felt similarly about the enjoyability of the space part vs the dog part. But for some reason I felt the opposite, the space part was alright but I didn't really connect with any of the characters or plot there much. But I loved the part on the dog planet, for me that world felt like he started with a question of "What might it look like if a pack animal achieved human-like level of intelligence?" and explored from there, and what he came up with made a lot of sense to me and was really interesting to think about.