Brushwagg

Brushwagg is a green creature type that is only used once, for the card Brushwagg in Mirage.

Nobody knows what a Brushwagg is. From its art and abilities, it can be deduced that it is a rodent or hedgehog whose elongated spiny body can inflate itself with air to form a globe. The spines may or may not contain poison. The subtype survived the Grand Creature Type Update.

"Defiantly, the young cyclops popped the brushwagg into his mouth. His cheeks suddenly puffed, his eye bulged, and he was forced to agree with his elder."

-Afari, Tales