|Featured in||"Sid the Science Kid"|
|Species||Stuffed animal dinosaur|
Arnie is the name of Sid's large stuffed animal dinosaur, seen in their bedroom on Sid the Science Kid. The inanimate stuffed toy sits in the corner of Sid's bedroom and is often used by Sid as an audience for his monologues and ramblings. In the episode "My Slide", Sid uses simple machines to get this particularlly heavy stuffed animal onto his bed.