you have some great ideas so far !! many viable actions
1- breed(s) of dog ?
any # of breeds can exhibit a high prey drive (not meaning "kill") such as German Sheps (mine) - its the herding/play instinct & that also drives the dogs to be trained as K9s, seeing eye dogs, PD K9s, seizure dogs which also involves the play drive which is big indicator for training. My sheps herd the cats all the time-
sight hounds such as greyhounds chase their "prey"