Hi, I have not heard of any such free service.
There is a good vet that I use for my dog on Calle Antera Mota 43, just beside Ceducomp.
The company is W.B.
The vet is Dr Luis Brugal Palewonsky
Phone 586 65 24
Cellph. 850 63 49, 461 24 56
The company is family runned by a couple, really very nice. They also have a pet-hotel in the same house.