I know this is probably a little odd but I make homemade dog treats and for the life of me can't find a recipe for an icing that I can use. It has to be with no sugar or salt and I need it to last as they do not always sell right away. I dip some of them in carob & vanilla chips but am looking for something new. I know it can be done because I've seen them but so far no one has wanted to share there knowledge and I thought - Hey I have a great place to post this question. If anyone can help I would greatly appreciate it!!!! 
Have you tried
http://www.geocities.com/heartland/ranch/1011/dog.htm
They have alot of doggie treat recipes there & I think I saw a frosting recipe. HTH.
jo_ann - I did find one on the site you recommended - Thanks!!
MrsMissey - what did you search under? I tried but could only come up with dog biscuits no icing? Do you have any suggestions on decorating the dog treats? I want to put a dog cookie bouquet together and not sure how to decorate it?
Thanks again for all your help!!! 
Ok so I did an internet search and kept coming up with yogurt icing (of course no recipe) does anyone know a yogurt recipe I might be able to use for dogs?
this is great!!!! I'm not the only insane person making doggie treats ... it all started because my kids love to be in the kitchen with me .... it's hard to let them participate in my cake decorating so I figured making dog treats would be perfect ... the dog will eat anything so it makes him the perfect audience ....lol ...we made them for our dog and their friend's dogs
I made some bones and with my letter imprint I put the dog's name and made some little hearts and put their initial ... you could put them on a cookie lollypop and arrange them in a basket .... you could make the gingerbread man paint him with food writers and call him a mail man ...good luck
aubrazacmom - I searched under "dog bisquit icing recipe".
Here is one that I found:
Icing Dipper Recipe
Use for the doggie equivalent of "black and white" cookies. Dog treats can be partially or fully dipped to coat then allow to dry.
Basic Dipper
3 cups vanilla chips (white chocolate)
1 tablespoon vegetable powder for coloring (see below)
1 teaspoon vegetable oil
Melt the vanilla chips and add vegetable oil and colorings. Dip the tips of the cookies in the icing and place on waxed paper to dry.
Colorings
Pink Dipper - beet powder
Green - spinach powder
Yellow - turmeric
You can also use paste food coloring.
This is so funny that this came up! I was just thinking the other day I wanted to try to make doggie treats for my in-laws dogs and people treats for the in-laws lol. The in-laws always watch our dogs when we come into town. Thanks for all the good information.
actually the amount of choolate a dog would have to eat in order to get ill is a huge number (this is what I have been told) I dont think a little amount like you would use to dip would be any harm.
I have always heard that it is the caffeine in the chocolate that is harmful to dogs. This is what is posted above the recipe:
About White Chocolate
You may notice that white chocolate is a typical ingredient in many treat icing recipes. While chocolate is dangerous for dogs, white chocolate is safe. The reason being, most all the caffeine substance in white chocolate has been removed.
White chocolate is primarily cocoa fat, sugar, milk solids, lecithin and vanilla with next to no "chocolate liquor" the substance hazardous to dogs. You may wish to read more about this in an article by K9 Magazine.
..and here is the link to the page:
http://72.14.203.104/search?q=cache:vSY4M0Q-CdoJ:www.gourmetsleuth.com/dogtreaticing.htm+dog+biscuit+icing+recipe&hl=en&ie=UTF-8
So I thought that I should jump in on this one as I have been a veterinary technician for 16 yrs now. the chocolate issue......
chocolate bars which have a low level of cocoa in them are not great but a medium sized dog would have to eat 36 of them to get sick enough to have serious problems. Now chocolate bars with alot of pure cocoa are not so good. It is a combination of things the main one being theobromine which is high in pure chocolate such as bakers chocolate, then the caffeine and the wrappers etc.
If your dog eats a huge box of valentines chocolates it may vomit but probably won't get severly sick but if your dog eats your box of bakers chocolate then you would be more concerned. Some times people think that because the dog vomited, it should be ok but as we all know chocolate melts and then sticks to the stomach, it doesn't all come back up. Activated charcoal is what is given to them to help absorb the toxins and then if severe enough of a problem, IV fluids as well.
Now I don't think white chocolate is really a chocolate and has theobromine but I am not positive on this one. the chocolate melts have little of it and has been fine for many dog treats but like people are different from each other so can animals be. what may not bother one dogs stomach may make another one sick 
Are you talking about a decorating icing? I make one that has no sugar (my dog is hyper ENOUGH) but pipes just fine. See the doggie cake pix in my photos.
Start with a small can of evaporated milk. Add a can of broth - chicken or beef. Then add 10-12 tablespoons of flour. Experience will tell you how much suits your purposes best. Whirl this in a blender to mix evenly and eliminate lumps. Bring to a boil, stirring constantly. When it's good and thick, chill until it is quite cold. (Put plastic wrap directly on the top so it won't form a skin. When it's totally cold, whip it with a mixer and then whip in dollops of Crisco (I wanted to use lard, but couldn't find any) until it's the right consistency for piping. The two dogs who've had this just love it.
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