Tamable mobs

It is a server where taming is a central way you get utility and progression. That can be pure vanilla with a culture built around pets and mounts, or it can include plugins or mods that add new tamables, stats, breeding, or equipment. If pets are only cosmetic, it usually will not feel like this format.

Some keep near-vanilla risk, others add guardrails against cheap losses. Common protections are reduced owner-friendly fire, damage scaling, recall items, chunk-based pet safety at home, or short protection after teleporting. The difference is whether pets still demand good decisions outside your base.

On structured servers, yes: leveling through combat or travel, breeding for traits, pet gear, and unlocks tied to quests or ranks. Even without custom systems, progression shows up in collecting better mounts, maintaining breeding lines, and upgrading your base so companions survive normal server life.

You end up designing around animals: stables with safe entrances, fenced paths that do not snag leads, indoor areas that do not trap pets in tight corners, and storage for food and gear. Bases become less about a pretty shell and more about keeping companions functional and alive.

Sometimes, but it depends on balance and rules. Combat pets can snowball fights and losing them to griefing feels rough, so PvP-friendly servers often cap pet damage, restrict them in certain regions, or focus pets on scouting and utility instead of raw DPS.