Tibbals

Tibbals is Fred's dog, mentioned in the episode, iMeet Fred. He attempts to attack Spencer while he tried to get into Fred's treehouse. His growls were heard, but Tibbals himself was never seen.

Trivia

 * Like Mr. Tibbals, Tibbals was named after Peter Tibbals: one of the writers for iCarly.
 * Spencer described Tibbals as "either a large dog or a small bear."

Credits to

 * iCarly Wiki on Fandom