Back at the Barnyard - Season 2 - Eps 44: Four Leaf Otis
The leprechaun steals the farmer's potatoes after Otis sprayed the potatoes, Otis and pals must stop him before the farmer goes bankrupt and the animals for less outlet. Unfortunately, also, the leprechaun turns Freddy and Peck into shamrocks and Pig into a corn beef sandwich head. Luckily, Otis gets an idea to cut out the middle man meaning to find the leprechaun's gold instead of catching him to surrender.
About Back at the Barnyard

Title: Back at the Barnyard
First Air Date: 2007-09-29
Last Air Date: 2011-11-12
Status: Ended
Rating: 6.892/10 (from 125 votes)
Language: EN
Seasons: 3
Total Episodes: 97
Network: Nickelodeon
Genres: Animation, Comedy, Kids
Production Companies: O Entertainment
Synopsis
What do farm animals really do when the humans aren't looking? Just ask Otis, a carefree "party cow" who inherited the job of keeping the barn... and it's residents... in order. But instead of responsibility, Otis is driven by an insatiable need for fun, fun, fun. Along with his barnyard friends Pip, Pig and Freddy, Otis will stop at nothing in his pursuit of a good time... which usually means a few close calls with humans and other threats to what really goes on behind closed barndoors.
Cast

Chris Hardwick
Otis

Leigh-Allyn Baker
Abby

Jeffrey Garcia
Pip

Tino Insana
Pig

Cam Clarke
Freddy

Rob Paulsen
Peck

Dom Irrera
Duke

Wanda Sykes
Bessy

Maria Bamford
Nora Beady

Fred Tatasciore
Farmer Buyer