There may be fairies at the bottom of the garden. There is no evidence for it, but you can't prove that there aren't any, so shouldn't we be agnostic with respect to fairies?
Goobermaster is watching the door at the Otter tonight.
Sid is pouting 'cause he didn't get any tacos.
Luis requires lots of reassuring hugs and snuggles upon waking up. Unless the food bowl is full.