ZoologyCraft

This modpack with 60+mods is highly interactive with many animal and dinsour mods. There are also over 10+ building and structures that are generated in your world. It includes a few tech mods, and farming mods. There is also Serene Seasons, which is basically a modded version of the four seasons spring, summer, fall and winter.  It also adds a few decoration and furniture mods. This is a smaller modpack, but it is still a lot of fun to play with.