Love cute cats, geek nerd humor and word play? Cat lovers will enjoy this funny chemistry and science pun gift! Reads: Cation An Ion With A Paws-itive Charge and the Cutest Ion Ever! Fun birthday present cat gifts for a student or teacher in high school or college. Pawsitive Cute Science Cat Gift Cation Chemistry Element - Grab these adorable, cute kitten chemistry gifts for science teachers, a physicist researcher, or a professional chemist with a fun sense of humor.