What is Zaroff's hunting experience?

Apperently hunting is all Zaroff did growing up. Check out this quote from the story,

"When I was only five years old he gave me a little gun, specially made in Moscow for me, to shoot sparrows with. When I shot some of his prize turkeys with it, he did not punish me; he complimented me on my marksmanship. I killed my first bear in the Caucasus when I was ten. My whole life has been one prolonged hunt. I went into the army--it was expected of noblemen's sons--and for a time commanded a division of Cossack cavalry, but my real interest was always the hunt. I have hunted every kind of game in every land. It would be impossible for me to tell you how many animals I have killed."