We had a mouse once roaming around on a counter top. There was no traps, or maybe it found poison and was walking around all poisoned like. Don't exactly know the whole story, but I know we didn't have glue traps at the time.
I didn't know exactly what happened, wasn't there until right before the problem was solved (this was quite awhile ago, I was a kid)... my dad had the mouse in a towel, head exposed. Took a butter knife, held it by the knife end, and slammed the handle down on the neck. Critter never knew what hit it.
I'm not a defender of vermin or anything, but I agree, all animals deserve a quick painless death. Whether an animal is intelligent or not doesn't matter, an animal doesn't need to suffer. They feel pain, they understand life or death.
Imagine a human on a large glue trap. Are you going to wait around and die of starvation/dehydration (technically, animals will die of dehydration first. still... that takes a few days for humans)? You might, might wait a day hoping another human will stumble upon you and help free you. But eventually, you're going to decide either a) fuck it, let's wait until I die and HOPE someone comes around, or b) I'm going to fucking go mental for a little bit and do absolutely whatever necessary to get free. If that means breaking limbs and yes, maybe even trying to bit yourself (flexibility and teeth/jaw issues might get in the way)... hell, there was a story of a guy who got stuck after a rock fell when we was trying to slip through a tight area in some rock formation/canyon/desert area. Nobody was around, so he broke his own arm, and he happened to have a knife on him. He sawed through the broken bone area, took the sawed off portion with him, and stumbled out and tried finding help. He did end up surviving (he was on some late night talk show forever ago).
Animals understand the basic things of life, it's all instinct for animals, including humans. Eventually, you'll do whatever it takes to survive, giving up is a uniquely human issue in most cases, as most animals will die in the attempt to survive, not through inaction.
In short, I like the tasty flesh of animals. But if you're going to kill an animal, make it quick.
A guy hiking got his hand caught under a boulder that fell and he had to cut off his hand to get free. It's all the same instinct.
hadn't seen this posted prior. oh well.