Yep it is very important to protect animals esp white ones in the sun...the tips of the ears, nose, tend to be the most sensitive and easily burnt, kiddies sun block is commonly used for animal sun protection, although im sure you could probably buy an animal product there is sure to be something on the market by now.
That's great thanks - she's black mostly but has a white bit on her belly which is pretty much bald (lurcher) and the skin gets dry anyway so i don't want sunburn on top!!!