Also known as a 'frig' or a 'pog'.
The friglet is a delicacy amongst the French (even though they'll basically eat anything) yet is hard to catch: although it's grunts can be heard for miles, the little critter can jump 27 feet at a time, therefore anyone who's ever caught one is often referred to as being 'a lucky frigger'.
"Oh but Piggy... we've gotten low ceilings... surely they'll hurt themselves?"
"Hmm... you're right... forget it... let's just have a zany adventure featuring some famous folks instead!"
From 'Muppet & Muppettability' by Austin Jayne.