Storm and Dave don't really have one - their tails are so nice and dark that any marks would be disguised real well. Am and I do, though. I have more like a "dot", as seen here:
...and Amber has a dash, as seen here:
In Morse code, we're spelling out "ET". Hmmm... what do you think of when you hear the letters "ET" -- "extra terrestrial"? Maybe me and Am are from outer space! COOL! I always thought Amber was born in northeast Kansas ... but no one has any idea where I came from. Wait 'til I tell Dave! This is so cool!
Siiiiiiiiiiiiibessssssssssssss innnnnn Spaaaaaaaaaaaaaacccccccccce!