You can learn more about how to set up a trap in order to kill the animal as soon as possible. what is needed for this?
There are 2 schools of thought on this and both work well. You can use a snare set to entangle the critter thus closing the snare tightly for dispatch,,, or you can use a really long snare (10-12'+) with a solid anchor so when the animal (typically fox or coyote) make a long run to the end of the snare, that impact locks the snare tightly for dispatch. Both styles of setting the snares requires a good positive lock for the cable, such as a cam-lock. A kill spring on the snare is definitely an advantage as well. You want to be sure you are using a fast closing snare with the proper loop size and height for the animals you are targeting so they will be caught on the neck and as close to the head as possible. I'm not sure what you have available in Russia for building the snares out of and I don't know if you can order from trap suppliers in other countries so I hope what I've said will be of some help to you.
There is one other option that may be a good choice for you, that is power snare. These are powered closed by big bodygripper springs. They kill your catch very fast. Here s a link to that style...
Ram Power SnaresLet me know if I can be of more help.