previously in rfc, "Paul M. Cook©®" > wrote:

> Mix it in with your pets food, assuming you have a dog or cat. It's
> great for their coats.
>
> Paul


According to research I've done on this (because I make my husband egg
white omelettes almost every morning and then feed one or two of the yolks
to my dogs) I believe that egg whites aren't that great for dogs unless
they are fed with the yolk at the same time. Or unless the egg whites are
cooked.

This because the raw whites contain avidin, a protein that blocks
absorption of biotin in the body. However, the yolks contain lots of
biotin, so feeding the two together is better.

There are differing opinions on this, but it's something to be aware of.

As for using extra egg whites:

I went through a period where I used lots of egg yolks making things like
lemon curds and various custards, and I'd save the egg whites to make
meringue cookies. I'd slip them into a zip lock back and write the number
of whites on it with a sharpie, and then when I'd accumulated a great
bunch, I'd spend a morning making the cookies. They are pretty simple to
make - egg whites, cream of tartar, sugar (you can customize with
flavorings and things like chips) - here's a link to an easy recipe:

http://www.joyofbaking.com/MeringueCookies.html

-Claudia