Skunk

Skunks are mammals world-renowned for their anal scent glands, which have the unique ability to produce a powerful malodorous liquid. They also make occasional guest appearances in the Crash series, as generic enemies.

Crash Bandicoot
Skunks appear in the levels Jungle Rollers and Rolling Stones, attacking Crash by marching at him in a straight line. They fall easy to jump or spin attacks, and given their propensity for marching in lines of up to four skunks long, slaughtering them in rapid succession is an easy way to earn free Wumpa Fruit. They never attack Crash with their notoriously malodorous excretions, implying that they had their anal scent glands removed; this could imply that Papu Papu keeps them as pets, presumably using them much like real people use hunting dogs.

Crash Twinsanity
Skunks reappear as generic enemies in Jungle Bungle. They attack by walking back and forth, as if they were generic platformer enemies. One, voiced by Jim Cummings (possibly a reference to the popularity of sexy skunks in the furry community?), laments his fate of having been stuck marching back and forth for "ten stinkin' years"; in a particularly controversial sequence that got the game banned from the Japanese Xbox, Crash assists this skunk in suicide, spinning him into a field of Nitro Crates.

Trivia

 * In the original Crash Bandicoot, skunks attack exactly like the British Redcoats attacked innocent American citizens during the Revolutionary War, by marching in a straight line. Some fans think this is a sly reference to how Australia was originally populated by British rejects.
 * Interestingly, in that same game, skunks only appear in levels named after famous bands. Not coincidentally, "skunk" is also a term used to refer to particularly potent varieties of the drug marijuana, which most famous band members enjoy immensely. Also not coincidentally, Mark Mothersbaugh was a member of a famous band called Devo.