It has a gamey taste I believe.
Cooking with Delicious Rattlesnake Meat
My friends and I used to hunt rattlesnake. I was the guy in the back of the line with a shotgun and clumsy feet as I had a tendency to bump into rocks. This was around Rattlesnake Mountain in Reno, Nevada which did have a lot of those around. They had got some before I was at the end of their line. Some of these boys had rattlesnake skins up on their walls of their bedrooms rather than Playboy centerfolds and/or posters of bands.