Coati! (or Quati)
These little rascals were everywhere in the Iguacu park. Think clever & mischevious like a South American version of a raccoon. I watched one raid a garbage can clearly designed to keep coati out due to the small circular opening. The coati squirmed his way into the hole and came out with a neatly tied plastic bag in his mouth, and sauntered off into the jungle. It looked for all the world like he had just picked up a take out order!