Firstly, If you don't have a call to action for your veterinary website yet, you should.

Two good calls to action for vets would be: - Book an appointment / Book a free health check now!

Your call to action needs to be BIG & BOLD, with a clear instruction that your visitors should act upon. A button icon for the visitor to click on usually helps reinforce your CTA.

Make sure you also feature your call to action on other main pages of your website - You can’t expect visitors to remember to navigate back to your homepage just to click on the button there.

Use a simple design, with minimal text, so that the message is clear. And it's important that your CTA should look the same on every page, keep the message clear!