Lets see:

Ollie paddles in the water bowl.

Toby has an irrational fear of going down steps, so he does it with his eyes closed

And everything Squid does is strange.

He licks the window constantly
He fights with himself in the mirror
He's afraid of any toy that squeaks
He likes to sleep on the scanner
He climbs the curtains
He licks his paws and washes himself like a cat