If your new cat attacks your old cat, it is important to separate them immediately to prevent any further harm. You may need to gradually reintroduce them using techniques like scent swapping and supervised interactions to help them get along better. Seeking advice from a veterinarian or animal behaviorist can also be helpful in resolving the issue.
It can if you clean it good enough
Should be about a year old according to my vet.
All you have to do is get the old cat use to the new one by holding them close together and let them kidda smell and see each other
4
no way
A medicine cat should be at least six moons old in order to start training as an apprentice and become a full medicine cat.
Mostly over a territorial issue.
If it's a normal cat, about 3 weeks old would probably work.
You should get them noodered once they are one year old.
a milk
5
the normal age for a cat to be neutered is about the time of 4-5 months.