Trimming a Cat's Claws?
There are natural herbal pet tranquilizers at the pet store. Buy one and give it to him wait 10 minutes for it to take effect. Then pet him and touch his paws but dont cut the nails. Next day give the tranquilizer and cut the nails.
Feeding Feral Cats?
Go to the website for Alley Cat Allies. They feed and neuter feral cats. Excellent people! I would say put out kitten food, almost any will accept that and like it. Hope this helps you.
