There is room in the Philippines for more dog training businesses. You don’t have to know how to train the dogs yourself, but perhaps you are a a trained dog trainer or handler about to retire from the service? Either way you can always hire the help you need at a modest cost compared to starting such a business back home.
There are already dogs in the country from which you can choose, but bringing a dog in is easy and requires little more than a quarantine form and medical check and the payment of a fee. No months in quarantine waiting for your dog to be released while the bills mount up. Of course good blood stock is never cheap but as a retirement activity to keep you busy, breeding, training and selling dogs has a lot of good things going for it.
You can start off with just a single pair and work from there, or bring in three or four bitches and a dog and network with local breeders for new stock. The market includes government and corporate security clientele, as well as private individuals. Dogs can be trained as obedience/companion animals as well as guard dogs, drug or explosive detection dogs and so on. Give it some thought.