Canadian Old Age Security (OAS) is the single largest program of the Canadian federal government. According to Budget 2012, the OAS program provides approximately $38 billion per year in benefits to 4.9 million individuals.
for the vet that would depend on if it gets sick. when you buy a new horse you should have the vet do a routine check would be about $100-$150. other then that keep your horse updated on it's shots and proper care and you don't have to worry.
Depending on what vet's cost is how much you'll pay. Where I live the office visits cost between $25 and $47 and this includes physical check-up. Since Specky is new to you and he is an older pup I would suggest having the vet do blood work too, which will add between $60 and $100 to the bill.