Solution

25544

First name
Casper
School
ACS Egham
Country
Age
11

Swimming Race:Frog Because he's the only one of the animals that can swim.
Running Race:Spider Because he's the fastest animal.
high Jump:Frog because he's the only animal that can jump.
Long Jump:Frog because he's the only animal that can jump.

Caterpillar Turned into Butterfly.

Same animals won the same events.

Caterpillars change didn't make a difference