We have the same problem with the bigger one. At first it scared my poor Trixie so bad that she wouldn't go near it. However, she does seem to love it now
And she manages to get it to make its terrible noise, LOL!! I swear the more she played with it, the more it seemed to squeek alot easier. Got me but she does like it now. Actually we have one in every size and she prefers the biggest one