Hmm, maybe that you can call Tiki, Tiki instead if Tik?

I don't think that it will confuse them unless they are using selective hearing.

Rachel (rizzy) dog Sally and my parents dog Sammy don't get mixed up, and with all three names, Jesse, Sally, and Sammy, none of them get mixed up, so....I think that it will be all right!

Steph and Jes