Oh, J'me, what a great story! I know how you miss them, but look at it this way - you are very close & won't ever go long without seeing them. And the new owners (other than the tail thing) sound great! Especially the boys - you know, all kids seem to LOVE dogs! So not only do these boys love them, but they seem to be taking responsibility with them VERY seriously. It will be a great experience both for the boys AND the dogs! For dogs love likkle kids too! What you did was great!
The heartworm preventative is a toughie. . .I not know where you can get that cheaply. Here in the U.S., I order my dogs' Interceptor from a website place, but I don't guess that you can do that in Jamaica, right?? You actually have to have a prescription from your vet to order it on-line!! Did the International Spay/Neuter in Jamaica folks who ran the clinic have any ideas on that?