I have two female cats,indoor cats and litter mates, who last night Anna became aggressive towards Audrey. By aggressive I mean they were full on fighting and I had to put them on separate rooms. I found a few tufts of hair and a few claws laying on the ground where it happened. This morning I woke up and opened my door, they greeted each other, rubbed thier faces together, and followed me to the food bowl. Like they always do, I then fed them and figured everything was ok. Well 5 minutes later a fight broke out again, and Audrey hid under my bed to escape. Anna now will not let Audrey come out of my bedroom without hissing and if nessesary will chase her and want to fight.
The first outbreak was all of the sudden, I was playing and petting them not thirty minutes before. Now, they are indoor cats, but it was nice out and I had the window open when this happened. It could be possible another cat came by and Anna got a whiff and reacted this way, but I closed the window and shades right after this happened. She is still acting aggressive almost 24 hours later.
Which leads me to two conclusions
A. There might have been a cat outside the window and it sprayed it's scent in the house, causing the continued reaction OR
B. Anna is sick, and acting this way to be tough and left alone.
But if she was sick, wouldn't the agressiveness build up, and not be so sudden.
Please help, thanks in advance.
The first outbreak was all of the sudden, I was playing and petting them not thirty minutes before. Now, they are indoor cats, but it was nice out and I had the window open when this happened. It could be possible another cat came by and Anna got a whiff and reacted this way, but I closed the window and shades right after this happened. She is still acting aggressive almost 24 hours later.
Which leads me to two conclusions
A. There might have been a cat outside the window and it sprayed it's scent in the house, causing the continued reaction OR
B. Anna is sick, and acting this way to be tough and left alone.
But if she was sick, wouldn't the agressiveness build up, and not be so sudden.
Please help, thanks in advance.