cutelyst 

1. A substance, person, or animal, usually used in small amounts relative to the situation, that modifies and increases the rate of cuteness in the group the without being consumed in the process.
2. One that precipitates the cutenss of an event, especially without being involved in or changed by the consequences:

Sparky our dog was the cutelyst of the party.

cutelyst by mada299 December 13, 2010