petbuddy-1.11-2.3.1.1.jar is a release file of the Minecraft data pack Titlecarts, made for Minecraft 1.11. It was published on December 7, 2016 and is 0.1 MB in size. For the full description, screenshots and every other version, visit the Titlecarts data pack page.
How to install: Put the .zip into the datapacks folder of your world (.minecraft/saves/<world>/datapacks) and run /reload. No mods needed.
