How to introduce a rescued feral/outside cat to my current indoor/domesticated cat?

 

Just want to say thanks for visiting our news site

We recently adopted a stray that wandered the neighborhood. She’s so sweet to humans but seems very aggressive towards our current cat. We have taken the new cat to the vet and gotten all the shots, spay, and medications, but still seems like they would attack each other.
Would it be best to just let them fight it out once to establish dominance in the house, or something else?

View Reddit by thepappasfritasView Source