I personally have a 7 1/2" redhawk in 44 mag and just bought a ruger 77 in 44 mag also. I don't think a 44 would be overkill for dogs, and the 44 carbines are easier to find than some of the other calibers, but a 357/38 would certainly do the trick on dogs and even deer at close ranges. Good luck and let us know what you decide.