Stray got in making cat cross? (5)
I believe the answer is:
tigon
'cat cross?' is the definition.
(lion/tiger cross)
'stray got in' is the wordplay.
'stray' is an anagram indicator.
'got'+'in'='gotin'
'gotin' is an anagram of 'TIGON'.
'making' acts as a link.
(Other definitions for tigon that I've seen before include "Cross between two big cats" , "Hybrid offspring of two big cats" , "Big hybrid of the cat family" , "Cross between tiger and lion" , "Animal" .)