We've introduced new cats into the family before without any major problems but this time around current Cat1 is not having it!
Cat1 - female, 4 yrs old. Very friendly towards other cats in the garden, will invite herself next door to find their two to play with. We thought she would like having a sister...we could not have been more wrong. Hissing, growling, fleeing at the mere sight of Cat2.
Cat2 - female, approx 8 months, missing a leg (unsure if C1 is maybe scared of how she moves as it's very different to a 'normal' gait). Unable to go outside yet, partly because she's still so new, also as we need a fence panel fixed to make sure she can't slip out.
We've done scent swapping, C1 is fine with C2's bedding etc, she just does not like C2 herself! Introduced C2 in a carrier, C1 was ok-ish with this until C2 moved. Tried having the door to DD's room (C2's 'base') ajar and giving them both treats while they can see eachother. C1 hisses and runs the second she's finished eating.
To complicate things further we also have DDog who is fine with C2 if it's just him and her, but if C1 is around and reacts, he will follow suit, also growling/wanting to chase.
Has anyone got any tips on how we could try to improve feline relations or is it just going to be a matter of patience and hoping that C1 comes around eventually...