As you played your deck against the various pets, you probably noticed some problems. Perhaps you had trouble getting enough mana, or you had plenty of mana but not the right color, or way too much mana and not enough spells to cast. Perhaps you did well against Goldfish and Rabbits, but died a horrible death when your opponents produced larger creatures. Perhaps you got squeezed to death every time by the Snake. Or perhaps you romped easily through all of them.

Whatever happened, you certainly learned something about how your deck behaves. You can use that information to tune your deck. You may want to add more land, or take some out. You may want to add some larger creatures, or anti-creature spells. You may want to add some cheap, easy-to-cast spells. You may want to junk the deck altogether and start over with a new concept. Or you may pack it away carefully, take it to the club tomorrow, and hope you do as well against humans.

Whatever you do, don't forget to feed your pet.