You know what would make your bad day even worse? Finding out your toaster is water-proof.

Having watched Red Dwarf, I completely believe this could be a cat.  Even a big cat!  No matter how evolved that cat might be, it's still a cat.

(You'd have to watch Red Dwarf to get that I guess.)

Well, there was this tiger who woke up one morning, and just felt great

(yes, just like Tony the Tiger: GREAAAAAAT).

Anyway, he just felt so good, he went out and cornered a small monkey and roared at him: "WHO IS THE MIGHTIEST OF ALL THE JUNGLE ANIMALS?"
And this poor quaking little monkey replied: "You are of course, no one is mightier than you."

A little while later this tiger confronts a deer, and just bellows out: "WHO IS THE GREATEST AND STRONGEST OF ALL THE JUNGLE ANIMALS?"
The deer is shaking so hard it can barely speak, but manages to stammer: "Oh great tiger, you are by far the mightiest animal in the jungle."

The tiger, being on a roll, swaggered, up to an elephant that was quietly munching on some weeds, and roared at the top of his voice: "WHO IS THE MIGHTIEST OF ALL THE ANIMALS IN THE JUNGLE?"

Well, this elephant grabs the tiger with his trunk, picks him up, slams him down; picks him up again, and shakes him until the tiger is just a blur of orange and black; and finally throws him violently into a nearby tree.

The tiger staggers to his feet, looks at the elephant and says: "Man, you don't have to get so angry, just because you don't know the answer!"