We recently rescued a 2 month old kitten from outside. Our resident cat doesn't seem to be much of a fan of hers however, she isn't displaying any signs of hostility, aggravation or stress factors aside from her tail movement being slight when they are in sight of each other, hissing and the occasional growling. I do not wish to rehome the kitten, but our resident cat has been with us the longest. Are there any known tips to work when it comes to attempting to introduce them without causing added stress?
They are separated in different areas of the house while my Husband and I are away at work but we do attempt to introduce them on our arrival home.