Some thawing advice from a thermodynamics standpoint:
[I'll try to put this into basic english, because I don't remember exact terms and can't use the complex symbols]
The three things that matter most when thawing something are temp difference, thermal mass, and contact.
Thermal mass is why we use water to thaw rather than just setting the snake-chow on the counter, more mass will add more heat.
Contact should be obvious, it has to touch to warm up the moose, so out of the bag is more efficient, but kind of gross sometimes. I would bag, but get that bag on as tight as you can [ideally, you'd vac-pack them individually] so warmer water is touching the most surface. Remember that you're fighting the fur, which is meant to be an insulator, so either put a bit of water in the bag or get it down tight. Also, weighting down the snake-chow so it stays underwater is helpful. [I just got a mental image of weight on the extra bag material, allowing the object to be thawed to float up but still be underwater, I'll have to try that next time I'm thawing dinner for people here]
Now for the tricky part, temp difference:
Since you don't want to cook the moosie, keeping temp difference low and taking a few minutes longer may be advised. Plopping the snake-chow into hot water will result in a cooked outside and a raw [maybe still frozen] inside. Restaurants thaw meat with cool running water, it doesn't take much flow to thaw 5 pounds of steaks fast, the goal is to have fresh, warmer water on the meat, rather than letting it cool the water it's sitting in.
A small trickle of cool water into a 2-4 cup container [500-1000 mililiters for our metric friends] that overflows into the sink will work wonders here. I thaw chicken breasts that way, and they're done in 20-40 minutes.
Maximize the surface area in contact with the fluid, don't over-do the temp difference, and keep the water moving. Use some hot water [at the end] or the blow-dryer to bring the meal up to a temp you snake likes.
Now I'll admit that I use fresh, unfrozen snake-chow that I hand-pick, and haven't played with frozen rodents. [Only one snake here] But I do know my heat transfer & fluid flow, in addition to applying it every day at work AND in the kitchen. The only major differences I'm anticipating between thawing a cut of meat versus a moosie is size and fur.
If anyone tries this method, please post back with results.