One Of The Feral Cats I Feed After Work Every

one of the feral cats I feed after work every day has patches of hair missing. She was very thin, also, that is, until she got pregnant of course. Also particularly missing hair along the spine and the hair on the spine stands straight up. I work downtown L.A. and used to trap, spay, neuter the cats. But the area where they lived was demolitioned and most of them were trapped by the city and killed. Some got away and were killed in the demolition. The rest scattered and we have found some and some have been added. I have been threatened to be arrested for attempting to trap. (city and county property - against the law) As a result, inundated with the cat population and many are sick. This particular is very thin and lethargic, although young and the missing fur is worrying me.