I really like the top design. It reminds me a lot of tapirs. Whether that was intentional or not, I like it. It would be great to see him with some color!
The top creature is the most successful. It has a good, sturdy shape that is really interesting. It would believably live in the desert too. It's face is really interesting—familiar enough not to be fantastical but still looks alien. I'd be interested to see what kind of hair it has. If it's short and bristly or longer and tough.