Dogs eating raw nuts?

Ok which nuts aside from Macadamias are bad for dogs.
Both Dowser and Duncan just love every kind there is.
I recently started buying a few pounds of mixed raw in the shell nuts for snacking. (potatoe chips bad m'kay). But when I bust the shells open sometimes the nut meat breaks up and parts fall on the floor. Dowser started cleaning up these parts and then began begging for his share of the prize every time I get into them. Not to be left out Duncan tried a few bites and now will sit up patiently waiting for a hand out of any type I will give him. They act as though this is a very special treat, or maybe it is the newness of it.
They are Walnuts, Hazel, Pecan, Almond, and Brazil Nuts.

 

Wow, no one has any input on this?
OK will keep searching the net for more confirmed info.

 

I did read macadamia nuts are poisionos, but I would think tthe other nuts would be too hard to digest.

 

Here's an interesting article that recommends one brazil nut each day for a 50 pound dog. This article addresses the need for Vitamin E in a diet.
http://www.mercola.com/2005/may/11/pet_vitamins.htm

 

I saw info about that a few weeks ago.
The boys really like Brazil nuts but seem to like the Pecans best. The ratio for Dogs and Brazil nuts is closer to half a nut per 50 Lbs or one nut every other day.
My next question would be, since selenium is a storable product could it be harmful to the dog if they were getting lets say 3 or 4 nuts per day?
Vitamin C is purged but D can store and build up and create health problems.