We will be moving in June to another state with two cats. Vet suggested a pill tranquelizer based on their weight (which he will do). Has anyone tried this? One cat is 12 1/2 pounds and body slams cage and howls - 20 minutes of that and i'm crazy - 6 hours for two days or 12 hour day i will be insane! Other cat is 8 pounds cries, nervous, etc. - doesn't body slam cage. Is regular size cage o.k. for that if they each have their own cage? Any suggestions would be swell.