Old School RuneScape: 10 Rarest Pets and How to Get Them

Pets in Old School RuneScape are more than just cosmetic companions—they are a symbol of accomplishment, dedication, and sometimes extreme luck. While these pets don’t provide combat advantages or stat boosts, they are still considered some of the most prestigious items in the game. One of the most sought-after pets among skilling achievements is the elusive OSRS agility pet, but it's just one of many prized companions players chase.

Whether earned through boss drops, skilling milestones, or minigames, rare pets are a badge of honor for those who manage to obtain them. This list covers the 10 rarest and hardest-to-get pets in OSRS, showcasing the incredible dedication required to secure these tiny trophies.

Olmlet

Olmlet is a highly prestigious pet obtained through the Chambers of Xeric, better known as Raids 1. It drops at a rate of 1 in 53 when a unique item is received, making it one of the rarer PvM pets in the game.

What sets the Olmlet apart is its ability to transform into other pets from raid-related bosses, like Tektiny or Vespina. This morphing feature gives it both flexibility and flair, making it a favorite among high-level players.

Getting an Olmlet requires not just raw luck but also mastery of raid mechanics and significant PvM experience. It’s a pet that reflects success in one of OSRS’s most collaborative and rewarding challenges.

Vet’ion Jr.

Vet’ion Jr. is dropped by the Wilderness boss Vet’ion and is a favorite among risk-taking adventurers. With a base drop rate of 1 in 2,000, or 1 in 1,000 for players who’ve completed the Master Combat Achievement, this pet represents a grind through dangerous PvM territory.

It can be toggled between two color forms—Orange and Purple—by using a Statius’s Warhammer, giving it a unique visual flair. Obtaining this pet also means dodging PKers and navigating one of the most lethal boss areas in the game.

For those who love Wilderness content and thrive on high-stakes encounters, Vet’ion Jr. is a rare companion that rewards both endurance and strategy.

Youngllef

Youngllef is one of the most difficult pets to obtain and also one of the most revered. It drops from either the Corrupted Gauntlet (1/800) or the grand coffin at the Hallowed Sepulchre (1/400), two of the most challenging solo activities in OSRS.

A standout feature of Youngllef is its ability to morph into the corrupted version, Corrupted Youngllef, using a Crystal of Memories. This transformation feature gives players bragging rights in both PvM and agility circles—especially those pursuing the OSRS agility pet through the Sepulchre.

Whether it’s through mastering Hunllef or executing perfect runs in the Hallowed Sepulchre, Youngllef is the ultimate testament to solo skill.

Rift Guardian

The Rift Guardian is the rarest skilling pet tied to the Runecrafting skill, one of OSRS’s slowest and most grind-heavy skills. The drop rates vary depending on your level and rune type, ranging from 1 in 2,987 to 1 in 7,407.

What makes this pet especially appealing is its ability to take on the color of the altar where it was obtained. This allows for some personalized flair based on your Runecrafting journey.

The grind to obtain a Rift Guardian is long and often lonely, especially for Ironmen. Still, those who get it earn serious recognition for sticking with one of OSRS’s toughest skill paths.

Lil’ Zik

Lil’ Zik is the miniature version of Verzik Vitur, the fearsome final boss in the Theatre of Blood. With a drop rate of 1 in 650 from regular raids and 1 in 500 in hard mode, Lil’ Zik is one of the most prestigious PvM pets you can own.

This pet signifies not only experience in one of the game’s hardest raids but also impeccable teamwork and precision. Players must execute raid mechanics perfectly to even have a chance at this companion.

Securing Lil’ Zik often requires dozens or even hundreds of successful raid completions, making it a true prize for endgame PvM players.

Pet Kree’arra

Pet Kree’arra is the tiny version of the powerful God Wars Dungeon boss Kree’arra. With a base drop rate of 1 in 5,000—reduced to 1 in 500 with Master Combat Achievements—this pet remains a difficult but attainable reward.

Like all GWD bosses, fighting Kree’arra demands solid gear and preparation. The boss uses high-damage ranged and magic attacks, so players need to come well-equipped.

Pet collectors who enjoy God Wars content find Kree’arra a worthwhile grind, especially given the pet’s iconic look and the prestige tied to acquiring it.

Bloodhound

The Bloodhound is one of the rarest non-combat pets in OSRS. It can only be obtained from Master Clue Scrolls, with a drop rate of 1 in 1,000 per completed clue. This makes it a treasure trail trophy rather than a combat one.

This dog companion is highly valued for its rarity and aesthetic, but also for what it represents: success in OSRS’s complex clue scroll system. Gathering and solving Master Clues is no small feat and often requires rare gear or access to remote locations.

For clue scroll lovers, owning a Bloodhound is the ultimate proof of patience and completionist spirit.

Corporeal Critter (Dark Core)

The Corporeal Critter, also known as the Dark Core, drops from the Corporeal Beast. With a drop rate of 1 in 5,000, this pet requires dedication and a solid team to farm efficiently.

As a miniature version of the boss’s energy-draining core, this pet has a unique design that’s instantly recognizable. Farming Corp can be punishing, requiring lots of supplies, coordination, and sometimes luck.

For pet hunters seeking to collect iconic boss drops, the Dark Core stands out as one of the most menacing and desirable companions in the game.

Pet Penance Queen

The Pet Penance Queen drops from Barbarian Assault, one of the most team-reliant minigames in OSRS. The pet is awarded via High Gamble after completing a full run, with a drop rate of 1 in 1,000.

The pet mimics the final boss of the minigame, showcasing your success in a rarely farmed but challenging group activity. Grinding for this pet requires players to master all roles—Attacker, Defender, Collector, and Healer—which takes coordination and significant time.

It’s one of the most underrated but respected pets in the game, a tribute to those who shine in OSRS’s cooperative content.

Jal-Nib-Rek

Jal-Nib-Rek is the ultimate PvM pet, awarded to those who complete the Inferno—the most grueling solo challenge in Old School RuneScape. The drop rate sits at 1 in 100 for successful completions, but the road to victory is brutal.

The pet is a fiery mini version of one of TzKal-Zuk’s healers. Getting it means you’ve defeated all 69 waves and survived the finale without crumbling under pressure.

Earning Jal-Nib-Rek is a mark of true mastery. It is not just a pet—it’s a statement that you’ve conquered the most demanding content in the entire game.

Final Thoughts on OSRS Pet Collecting

From the elusive Jal-Nib-Rek earned through the Inferno to the OSRS agility pet acquired from the Hallowed Sepulchre, these companions are far more than just in-game cosmetics. They reflect deep mastery, immense time investment, and often a blend of luck and skill.

Whether your path to collecting them is through high-level PvM, long skilling grinds, or niche minigames, each rare pet in OSRS tells a story. For those seeking bragging rights, a personal trophy, or simply a goal to push their limits, chasing these pets is one of the most rewarding journeys the game offers.

So whether you’re raiding, running agility laps, or solving clues, keep grinding—your next rare companion might be closer than you think.