different regulation in every area i would guess, i am a licenced guard. requires a crowd controllers licence, a security guard licence, a dog handlers licence for security, radio operator and first aid.
EVERY bite goes to court and has to determined by a jury to be within guidelines, the guard is on their own.
we basically have to be assaulted to justify a bite, their is no justification to bite a fleeing suspect. the code covers defence of a handler as a last resort in an attack on the handler that or defence of someone being attacked, but is a bit more problematic. i have had friends directed by police to allow a bite, friend made sure it was audio recorded and had no prob in court.
it is illegal to be employed as a sg without a licence same as k9 handler. many in the industry are not licenced and can face fines.
training log books and video are not mandatory but can help yr case in court, the better companies make sure all training is documented.
reccomended dog breeds are rott, dobe, shep. for ease thru court, other dogs are in work. some dogs are selected because they won't bite, others are selected cos they will. training is basic as dog is NEVER allowed off leash, re-bites can be considered excessive force.
guys like me do more training cos we like training dogs, others get the job and get handed a dog, could be the first dog they ever had.
temperements are typically low prey high defence, a lot of dogs have been pulled off death-row for the work, many others are well bred dogs that growled at the owners like the large number of dogs on threads here. not that many pups are bought for the work. my dogs is several generations over 30 years bred for this role, big, nasty, sharp.