The more you know.
They're = They are /\ Their = Possessive /\ There = LocationYou're = You are /\ Your = PossessiveIt's = It is /\ Its = PossessiveI'm not a grammar Nazi; they used to police German, not English.
Those were all pretty good, but the Swan Ronson one... I peed a little.
Originally Posted by Torethyr
Mountains rise in the distance stalwart as the stars, fading forever.
Roads ever weaving, soul ever seeking the hunter's mark.
Formerly Ryngo Blackratchet
You can also differentiate them based on fur on ears, some cats have less fur around the inner ear, while some have more.
And last, but not least, whiskers, how long they are and the colour, as some cats have white whiskers while some have whiskers similar to fur colour.