Creature certainly caught, for instance, climbing (5)
I believe the answer is:
gecko
'creature' is the definition.
(type of lizard)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for gecko that I've seen before include "Display" , "Lizard than can't blink" , "Malaysian climber" , "Type of lizard" , "Reptile" .)