Gentle creature (3)
'gentle creature' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lamb that I've seen before include "Young sheep" , "Charles ---, essayist; meek animal" , "Young ovine" , "Exemplar of innocence" , "Agnus Dei - . . . . of God" .)
(Other definitions for doe that I've seen before include "Ode to a female deer" , "Ode to a female rabbit" , "A female deet" , "Rabbit, perhaps" , "partner for a buck" .)