I totally agree with farlap.When i took my lurcher to the vet for its first jab i was told she had a heart murmour,but when i took her back for her second jab a week later she was seen by another vet and she said she was fine.So always get a second opinion some vets will try it on just so they can get you to buy masses of expensive tablets.Not all vets i must point out are like this but they are out there.