Anybody who owns a sick pet had better learn to spell "veterinarians".  Otherwise, say goodbye to Fido!
Pretty sure veterinarians charge money.  Their business model is plenty profitable.  Here in the states, I know veterinarians who fly between practices in different cities in a private jet!
Worldwide, there are 246,000 exact monthly searches for [veterinarian] in Google.  And the suggested CPC bid is $2.96 - $3.30 with medium competition for the plural.
So, respectfully, I disagree.  The domain is definitely worth something.  The only question is how much.