i just got a 6week old kitten.i also already have a 8year old cat.the older cat seems scared of the younger and hisses then runs away.how long will it take for the older one to adapt to the new? thank you for your time bob.
Introduce them slowly. Put the kitten in one room with a screen (ie. baby gate) so they can see each other but not touch. After a week you can take away the screen. Spoil the older cat with extra treats etc.. and let them work out the rest. vetcare