This is where the age rating might not be hard and fast- some people are more sensitive to that than others. Animal carcasses do appear (and serve as the player's food source), and these do show some blood/skeletons. Failing this mission results in the player getting shot, however this is bloodless and only results in a loud sound effect and instant death of the player's wolf. In the second mission, the player can go to a cattle ranch and kill and eat a calf. These fights are not at all bloody, however, and compared to many games on the market today, the violence is very minimal. Interactions with other wolves may not always go well either, and players might have to fight then, too. In WolfQuest, players must hunt for food and occasionally fend off predators. For those who are very concerned about violence, it should be noted that the game does depict the life of a real wolf, which is not always peaceful and, as wolves are carnivores, often involves violence (hunting). I was 9 when I started playing, but I doubt it would have had a negative impact on me had I played it when I was younger. I rated it for 8+, but really it depends on the individual child.
As a longtime player of WolfQuest, I can safely say that this game is a great educational option.