Accepted Answer

Hello,

The behavior your describe sounds like redirected aggression, and is not uncommon in cats.

http://www.sniksnak.com/cathealth/aggression3.html

It also sounds like Sammy is very territorial with regard to you, and his environment.

http://www.sniksnak.com/cathealth/aggression4.html

It would be a good idea to have Sammy evaluated by his vet, in person, as sometimes an underlying medical problem is related to the aggressive behavior. Once this has been ruled out, as hopefully, Sammy is healthy, you and your vet can begin to treat this as a behavioral problem, and you can see more about aggression and treatments, here:
http://www.sniksnak.com/cathealth/aggression.html

Consulting with a feline behaviorist might also help in treating Sammy's aggression.

Your cats should benefit from a cat appeasing pheromone called Feliway/Comfort Zone for cats. It helps calm stressed/anxious cats and is used in a multitude of situations. You can find this product in major pet supply stores and online.
www.catfaeries.com/feliway.html

For the moment, I'd try my best to keep Sammy and Amanda separated, so he doesn't hurt her. Also, discuss with your vet, starting Sammy on a low dose, anti-anxiety medication, just for a short term, to see if this helps. I only believe in resorting to the use of this type of medication as a last resort. Clomicalm and Prozac have been used successfully in some cases with aggressive cats, so discuss these medications with your vet.

http://www.petplace.com/drug-library/clomipramine-clomicalm/page1.aspx
ttp://www.petplace.com/drug-library/fluoxetine-prozac/page1.aspx

I hope all will be well.

Cher

Expert:	Jessesmom
Pos. Feedback:	99.7 %
Accepts:
Answered:	6/20/2008

Feline Specialist Health/Behavior

Feline Healthcare and Behavior Specialist 40+ years Experience