Start with a clinic visit: body condition assessment, panleukopenia and respiratory virus evaluation, FeLV and FIV screening, and internal and external parasite checks.
With resident cats, isolate the newcomer in a separate room for two to four weeks with separate supplies, integrating gradually after health clearance, deworming, and vaccines.
Street life often leaves malnutrition and stress-related soft stool, so start with small digestible meals and build up; gorging risks refeeding problems.
Give plenty of hiding space and time, as most strays need weeks to relax; sustained aggression or total food refusal calls for veterinary and behavioral help.
