I just got too curious and took them apart... then it was fun so i took them apart many times (switching out backgrounds, trying the other guts in the other pets, etc.
eventually led to a baggie containing a mess of stripped screws and parts.
I still wish i had those parts today though, i could go find new screws and put them back together once and for all. One would have been especially sentimental to me now as the person who got it for me is passed away now.
at least i still have the memories.