[Lee N. Field]

From the link:

White chocolate: 200 ounces per pound of body weight. It takes 250 pounds of white chocolate to cause signs of poisoning in a 20-pound dog, 125 pounds for a 10-pound dog.

:-0!

[AnAmericanMother]

White chocolate is not really "chocolate" other than a (slight) flavor. It has very little if any cocoa in it.

The squares of bitter, dark, unsweetened "baker's chocolate" are the ones you have to watch out for. Eating a couple of those can kill a dog.