My Jack Russells are pretty smart sometimes.
My Jack Russell peed on the utility room linoleum last night; the first time in 14 years that he's done that. He was obviously embarrassed about it, and judging by the volume of the flood, must have held it as long as he could. But I didn't heed his barking in time.
His mathematical genius is shown in his skill at catching Frisbees. He adds, subtracts, divides, (doesn't multiply -- he's fixed), differentiates, integrates and solves several partial differential equations simultaneously in order to catch the Frisbees.
He's very modest about his genius though. I can't even get him to paw out the correct answer to 2 + 2. He gets "5" every time. But he claims he's using a different base.