American Dragon: Jake Long

'American Dragon: Jake Long' is a fantasy animated series made for the Disney Channel, premiering in 2005 and ending in 2007 with two seasons and 52 episodes. The title character Jake Long, a Chinese-American teenager who can turn into a dragon, must defend New York from any magical threats abound and fight the Huntsmen, a clan of dragon-slayers. With him are his Grandpa and his talking dog Fu Dog, and best friends Trixie and Spud.

S1E17: Halloween Bash
Trixie decides to wear a big green inflatable suit for a Halloween party at Jake's Grandpa's place, though it repeatedly gets deflated and re-inflated throughout the episode.