Male cat and sheep turned up to see rodent (6)
I believe the answer is:
marmot
'rodent' is the definition.
(I know that marmot is a type of rodent)
'male cat and sheep turned up' is the wordplay.
'male cat' becomes 'tom' (I've seen this in another clue).
'and' says to put letters next to each other.
'sheep' becomes 'ram' (male sheep).
'turned up' shows that the letters should be reversed in order.
'tom'+'ram'='tomram'
'tomram' reversed gives 'MARMOT'.
'to see' is the link.
(Other definitions for marmot that I've seen before include "Small burrowing animal of the squirrel family" , "Coarse-furred burrowing rodent" , "Creature" , "wild rodent" , "Furry burrowing rodent" .)