Wild animals came by ’orse, reportedly (3,4)

I believe the answer is:

roe deer

'wild animals' is the definition.
(type of wild animal)

I cannot understand how the remainder of the clue works.

(Other definitions for roe deer that I've seen before include "Hoofed animal(s)" , "Countryside mammal" , "Small hoofed animal from Eurasia" , "Native wild animal" , "Common wild animal" .)

I've seen this clue in The Times.

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