We're watching The Book of Bobba Fett, and she said, "You know...Banthas should have been indigenous* to Hoth, and tauntauns should have been indigenous to Tatooine." Mind, meet Blown. I'm paraphrasing. Bless her heart, she doesn't know what "indigenous" even means, but I know what she meant. Still...good point.
Considering water is so limited on Tatooine that it has to be extracted from the air, no complex life should be indigenous to that planet. And considering that Hoth (per Han Solo) is nearly devoid of smaller life and has no apparent vegetation, no larger lifeforms--especially carniverous Wampas and whatnot--should exist there. But it's the movies.
I just watched the second episode of Boba Fett, where a Tusken Raider mentions that Tatooine wasn't always a desert world.
It would make more sense to have a big wooly mammoth on an ice planet and an oversized kangaroo on a desert planet. The question is how long ago did Tatooine become a desert planet, and did Hoth suffer a similar fate in that it also had some catastrophic event that completely changed the climate.
