I would beg to differ. Guinea pigs can do tricks, just like dogs. They can be trained to use a litterbox, beg, do circles, jump hurdles, sqeak on command, shake paw, and be taken for a walk on a harness etc... They even purr and enjoy being brushed. They also love spending time outside and playing with/on things that are soft. So, truly, guinea pigs are more than just a rodent.