The triplets were afraid of Cola, partly because Cola was very defensive towards them and either shunned away or threatened to bite them when they went near him. So I brought them to the Dog Run Park and let them interact with other dogs, teaching them how to approach dogs and how to play with them. After 2 outings to the park, the kids like dogs more and are much closer to Cola. This is a good method, try it if you have a bad dog-kid relationship, hehehe.