What was the novel title?

[Sergey]

If you read a JL work long time ago and now you'd like to remember the title, you can apply for helpe here

[Sergey]

There was a short story in which the storyteller didn't like some person for no specific reason so he killed him with the help of a dog, trained to find and return tossed object (and eventually, a dinamite bomb the victim used to fish with)

[Marek]

It's probably "Moon-Face" from 1902, I don't remeber having read this one, but I found the synopsis on this site: http://www.snopes.com/critters/cruelt...
"ctrl+f and type "Jack London"!
Cheers! :)