Put out about untamed pet crocodile, say (7)
I believe the answer is:
'crocodile say' is the definition.
(I know that crocodile is a type of crocodilian)
'put out about untamed pet' is the wordplay.
'put out' becomes 'rile' (I've seen this in other clues).
'about' means one lot of letters goes inside another.
'untamed' indicates anagramming the letters (I've seen this in other clues).
'pet' is an anagram of 'ept'.
'rile' placed around 'ept' is 'REPTILE'.
(Other definitions for reptile that I've seen before include "Unpleasant character" , "Cold-blooded vertebrate" , "Eg, snake, lizard, etc" , "Turtle, for example" , "Snake or crocodile, say" .)