Animal embraced by trainspotters (5)
I believe the answer is:
otter
'animal' is the definition.
(I know that otter is a type of animal)
'embraced by trainspotters' is the wordplay.
'embraced by' indicates the answer is hidden within the clue (surrounding letters embrace the answer).
'OTTER' can be found hidden inside 'trainspotters'.
(Other definitions for otter that I've seen before include "Aquatic creature" , "Water animal with webbed fee, brown fur and flat tail" , "Aquatic carnivore" , "Freshwater carnivorous mammal with webbed and clawed feet" , "Fish-eating mammal" .)