Mr. Ugh

From Muppet Wiki

Mr. Ugh appeared on Dinosaurs, as the title character of the television show Mr. Ugh, a parody of Mister Ed. Mr. Ugh is a talking caveman, owned by a dinosaur named Woodrow.

Mr. Ugh appeared in a commercial for his own show, seen in "Hurling Day", where he is advised not to open a very important package addressed to his owner. According to the commercial, the show airs at 4:00pm on TV3. The same scene used in the commecial was later re-used in "The Clip Show".