How security dog units work, what they can and cannot detect, and the welfare and legal rules that govern every deployment under the Guard Dogs Act.
What can a security dog actually detect?
A general purpose security dog is primarily there to find people. It will locate someone concealed in a part-built structure, behind stacked material or in undergrowth far faster than a person with a torch, and in conditions where human senses are close to useless: darkness, wind, heavy rain.
Detection dogs are trained for specific target substances, most commonly drugs or explosives. A drugs detection dog is not an explosives dog and vice versa; the training is specific and a dog should only be presented as capable of what it has actually been trained and assessed for.
Often yes, and that is the main commercial argument for a dog unit: one handler and dog can cover ground that would need several static officers to watch properly.
What determines it is the perimeter length, the number of access points, how much internal void or structure there is to search, and whether the site is lit. A large open yard with good sightlines is very different from a part-built multi-storey with dozens of places to hide.
This is why a survey comes before a quote. A number produced without seeing the site is a guess in either direction.
Are security dogs dangerous to my staff or the public?
A properly trained and handled dog is under control at all times and is not a hazard to people who are supposed to be there. Handlers brief site personnel so everyone knows the team is working and how to behave around the dog.
The risk comes from poor handling, not from the dog being present. A dog that is unfit, badly socialised or worked beyond reasonable hours is a liability, which is why welfare and working-time management are safety controls, not administrative niceties.
Warning signage at entrances is a legal requirement and part of managing that risk.
Working time, rest periods, water and vehicle temperature all need to be actively managed and recorded. A dog that has spent hours in a hot vehicle is not detecting anything, and a handler on an over-long shift is not either.
It is also a client issue, not only an animal one. Welfare failures attract local authority attention, and the site where one happened does not escape the reputational element.
Ask a contractor specifically how they manage vehicle temperature and rest. Vague answers usually mean it is not managed.
They should work as a bonded team, the same handler with the same dog. A handler given an unfamiliar dog for a shift cannot read its behaviour, and a dog that does not know its handler will not work reliably.
Continuity of the team on your site has a second benefit: a handler who has worked the property before knows its layout, its problem areas and what normal looks like there, which is the only dependable way to notice abnormal.
