This question is not clear enough because " a pack of wolves chasing a pack of deer and jumping into the river " may refer to different movie or novel plots. Here are some possible answers: 1 " Wolves ": This was a movie released in 1982, directed by William Yubin, and starred by Peter Austin, Peter Fokke, William gibson, and others. The movie told the story of a pack of wolves chasing a pack of deer. In the end, the deer jumped into the river and escaped. " Wolf Totem ": This was a Chinese fantasy film released in 2015. It was directed by Jiang Wu and starred by Wu Jing, Qu Chuxiao, Zhao Jinmai, and others. The movie told the story of a wolf group that had sex with humans to protect their home. Call of the Wild: This was an American film released in 1988, directed by George Lucas and starred by George Lucas, Robert De Niro, and others. The movie told the story of a primitive tribe and humans. The above are some possible answers. If there is more information or context, a more specific answer can be provided.