Melissa'S Octopus And Other Unsuitable Pets

There are certain animals that make suitable pets, like a cat, a dog or a guinea pig. Then there are other animals that definitely make UNSUITABLE pets, like an octopus, a warthog or an elephant. They are much too large, too messy and, well, just a tad free-spirited. But can you guess what makes the MOST unsuitable pet EVER?