My dog is going in for an operation at the end of the week, and she doesn't do well with the "cone of shame" for 2 reasons:
1. she doesn't see well - the cone flapping around her face frightens her
2. she's short - the standard e-collar is made for dogs with longer legs. The cone style gets her tangled up.
if your dog has either of these issues, you might want to consider a different style of collar for a recuperating dog.
FIrst, I looked all over the internet for ideas. I found a really good video on YouTube on how to make an "instant" soft collar made out of a towel that, rather than shielding the dog's face from the wound, stabilizes the dog's neck so it can't turn around. The collar seems like it would work great, but I wanted something more permanent.
So I went to the pet store, and purchased something for $30, which is money I really don't have to spend right now. Then I kept looking on the internet... and found even more expensive gear. FoRgEt It! I decided I'd see what I could do with what I have laying around.
FIrst, I READ everything I could find on the internet. Know that there are many devices out there (all fairly pricey) but they are basically one of two styles: a cone, or a neck restrictor. This idea isn't different from them, but I think it's the most comfortable.
You need to MEASURE your dog's neck, both around the neck (my corgi's neck is 16" around, comfortably) and from the back of the ear to the shoulder (which was approx. 5") These measurements will be different in your dog, and you should measure several times just to be sure you get the numbers right. (Because, if your dog is like mine, she's not standing still for some stupid tape measure!)
Because I used a very thick foam (which is key to keeping the dog's head stabilized) I CUT an extra long and wide piece of egg crate style foam because it's what I had laying around. I went longer, rather than shorter in case I needed extra - I did as it turned out. Even though I measured her neck at 16", the piece of foam ended up being 22"! That's because I wanted a little extra for comfort, and the foam is so thick it added extra. I can't tell you a specific formula for your dog, since I don't know what thickness of foam you're going to use. This is one of those projects that you just have to figure out as you go..
(you'll notice that the piece of foam is kind of fuzzy looking - i took it out of the fur sleeve for this Instructable, so sorry it's not pristine!)