I'm in New Hampshire and the law says I can legally shoot dogs, but I can't find anything about cats. 466:28 Killing Dogs Legalized. Any person may kill a dog that suddenly assaults the person while such person is peaceably walking or riding without the enclosure of its owner or keeper; and any person may kill a dog that is found out of the enclosure or immediate care of its owner or keeper worrying, wounding, or killing sheep, lambs, fowl, or other domestic animals. Yesterday, there was a pack of cats hiding in the bush laying low as my pullets were free ranging.. My wife chased them away. Tonight, I head a noise, so went outside and found a few cats sneaking around the coops and pens. I feel as if they're going to become a nuisance and a threat to my ducklings, pullets and hens. My rooster free ranges 24/7 within the fenced area where the coops and pens are and even he could be attacked while asleep in his little house.. He's free to come in and out as he pleases as there is no door on his home. Anyway, I'd like to get rid of these cats before they do something.