Oh absolutely. I'm genetically male but take hormones to create milk production so I can make non-toxic, vegan, casein glue, for use in producing vegan, non-toxic, lickable, envelopes (you can order them on my web site), but I make more milk than needed for envelope production, so I'd definitly breastfeed any mammal — a cat, a bat, a rat, or whatever — that needed milk. Definitly.
And don't forget, if you order 10 or more envelopes, I donate a 1/4 of a cup of milk to an orphaned rat. How about that!