Animal horn I carved (5)
I believe the answer is:
rhino
'animal' is the definition.
(short for rhinoceros)
'horn i carved' is the wordplay.
'carved' is an anagram indicator.
'horn'+'i'='horni'
'horni' anagrammed gives 'RHINO'.
(Other definitions for rhino that I've seen before include "Massive mammal with one or two horns on its nose, in short" , "Endangered wildlife" , "Endangered species of large horned herbivore" , "Horned creature" , "Horny creature" .)