Benjo, here's two web site links that I have found to be very helpful:
[url=http://www.doctorsforpets.com/:a8606]http://www.doctorsforpets.com/[/url:a8606]

[url=http://www.vetinfo.com/dogindex.html:a8606]http://www.vetinfo.com/dogindex.html[/url:a8606]

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Joe