He was not doing all that without any medication?

With the exception of #1 all of those seem normal to me but since it's a
change in behavior I'd be concerned.

I'm no cat expert but a checkup always seems like a decent thing.  Is there
any chance he could be smelling another cat?

I have heard of all the behaviors and experiance 2 - 4 with all my
cats!  I have another cat who is quite chatty and have heard of cats
who talk nearly 24/7.

I agree with the others, first call your vet, second, this sounds
territorial.  Did you get another cat recently or did you lose a cat?
It could also stem from a loss I would think.

Hi my cat has anxiety problems.  My cat is a female name Flo and she is 8
years old and I've had her for 8 years.  everytime the door opens or the
phones rings, she runs and hides under a bed in a bedroom.  The most
problems I have is when my cat has to go to the vet and she has to go in
her carrier.  Once we get her carrier out, she runs and hides and most of
the time I have to pick her up and carry her in her carrier which she
doesn't like and once she is confined to her carrier, she starts meowing a
lot.  I was wondering if there is a way to fix the problem of my cat not
being afraid to go in her carrier by herself when she has to go to the vet
for exams.  My cat doesn't like to be confined to her carrier.  She goes in
her carrier nicely by herself after the exam but from home, it is a
problem.  Can you give me any advice on that?

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