From Muppet Wiki

The Safari Animal Tracker chases Fozzie, who he mistakes for a wild animal, in a sequence from It's a Very Merry Muppet Christmas Movie. In his pursuit of Fozzie, he accidentally tranquilizes Joe Snow.

Fozzie escapes from the Animal Tracker by running through a Christmas tree painting machine but is mistaken for the Grinch by a group of Whos and, in the ensuing confusion, accidentally exchanges his bag of money with a sidewalk corner Santa's bag of used clothing. It is therefore because of the Animal Tracker that the Muppets are late in their final loan payment on the Muppet Theater to Rachel Bitterman

The Australian accented hunter is a parody of Steve Irwin, host of The Crocodile Hunter.