In its fundamentals it recalls Muktuk Wolfsbreath, Hard-boiled Shaman. The story "Song for the Dead" even follows the formula of the Wolfsbreath stories: a conflict with a spirit reveals a secret transgression in the human world. But where the Muktuk Wolfsbreath series wrings some humor from juxtapositioning the activities of a Siberian shaman with dialog in the style of hard-boiled fiction, Tiger Lung plays it straight
Roy is not trying to write a standard prehistoric comic in the Tor or Kong the Untamed vein (not that those aren't cool in their own right), but more resembles Shanower's Age of Bronze in his attempt to create a level of (pre-)historical verisimilitude. It's most definitely fantasy, though, with its realms of the dead, various spirits and even were-hyenas. The only fault in the collection is with only 3 stories, it's all too short.