Whip the egg whites in a mixer (heidi note: I'm still not sure if they meant whip or whisk... the recipe doesn't say anything
about whipping into peaks, and it doesn't say anything later
about carefully folding in the whites, so this time I went on the
assumption that they really meant for us to whisk the whites a bit - folding in whites might be interesting too though, and might lighten up the waffles a bit.)
Ultimately, be cautious, don't make
assumptions about your new dog, and watch their body language
carefully.