Mania for animation grips that boy in place of Disney? (7)
I believe the answer is:
anaheim
'mania for animation grips that boy in place of disney?' is the definition.
The definition suggests a singular noun which matches the answer.
This is the entire clue.
Can you help me to learn more?
(Other definitions for anaheim that I've seen before include "Californian city" , "Disneyland's home" .)