More Mee-Pet Questions here:
http://www.worldofmeeroos.com/index.php?q=node/4502

Mee-Pets are the same as any other meeroo except they do not (should not) Breed, Dig treasures, or gain regard. They should continue to grow till they hit max size. If they are gaining regard once you rebuild them they will reset the regard. There where a few bugs with the first Mee-Pet transformations how ever those have been fixed and if your Mee-Pet is gaining regard or digging this will stop once you rebuild them or take them into invy and rez them back out.