Probably.... I am not 100% sure, memory overload (or Stack Overflows) are generally known to be cause by certain events caused by the server's code, so either something on the server crashed it (You or your cat), or an internal error,
your cat might be gone cause it might have took up to much memory, but then again, I don't know how many entities were loaded, if you give me that info I could give a more clear answer,,,,