Best Pets Tier List

Pet Ranking Criteria

Pets in +1 Muscle to Push Boulder typically grant muscle gain multipliers, push power bonuses, luck for hatches, or hybrid stats. We rank by sustained value across rebirths rather than flashy rarity alone.

This wiki covers +1 Muscle to Push Boulder by Doolittle! (Place ID 136107936984073). It is not Sisyphus Muscle Push, Push A Rock, or +1 Muscle to Arm Wrestle — those are separate Roblox titles with different mechanics, developers, and code lists.

Exact pet names evolve with content updates. The tiers below describe archetypes and expected rarities — swap in new hatch names when patches add pets without changing the underlying role.

S Tier — Best in Slot

S Tier pets combine high muscle multipliers with secondary push or luck stats. These are your long-term equip targets after rebirth 2+ when hatch pools unlock their rarest entries. Examples include mythic-tier strength companions and event-limited units documented on pet events.

If you pull an S-tier pet early, protect it through rebirths using equip slots unlocked via progression on unlock requirements.

• S — Top mythic muscle + push hybrid pets
• S — Limited event pets with exclusive multipliers
• S — Best-in-class luck pet when hunting higher egg tiers

A & B Tier — Strong & Situational

A Tier legendaries and high epics serve most of mid-game until S-tier hatch rates become affordable. They outperform lower rarities even without perfect rolls.

B Tier rares bridge early muscle gaps — keep one muscle pet and one luck pet equipped while farming currency for better eggs listed on egg tier list.

Replace B-tier pets after your first intentional rebirth push following rebirth timing guide.

C & D Tier — Fodder & Index

C Tier uncommons help only during the first hour. Swap them once basic egg repeats dry up.

D Tier starter commons exist for tutorial completion and collection index if the game tracks one — never equip long term.

Full pet stat tables live on pets item page. Optimization workflows: pet optimization guide.

Tier Methodology in Practice

Tier placement for +1 Muscle to Push Boulder combines muscle per minute benchmarks, push checkpoint clears, and hatch return on investment. A pet ranked A-tier might be S-tier during a luck event — watch pet events. Gym upgrades that look B-tier in isolation can become S-tier when paired with rebirth multipliers from the rebirth build.

Use tiers as decision support, not gospel. Record your own muscle per minute before and after equip changes using the muscle calculator. When Doolittle! rebalance hatch tables, revisit pets and eggs item pages alongside this tier list.

Wiki Methodology & Verification

This tier-list/pets article was last verified on 2026-07-08 against live testing in +1 Muscle to Push Boulder on Place ID 136107936984073. We prioritize in-game confirmation over datamine leaks, copied code lists from unrelated muscle simulators, or unverified social reposts. When Doolittle! ships a balance patch, numbers in tier lists, unlock tables, and calculator defaults may shift until we re-test.

Cross-linking is intentional: muscle progression touches gyms, pets, eggs, rebirth, and boulder routes simultaneously. Use the guides hub, tier list hub, and tools hub together rather than reading a single page in isolation. If you notice outdated text after an update, compare the in-game UI first, then check the latest updates page for patch notes.

This wiki covers +1 Muscle to Push Boulder by Doolittle! (Place ID 136107936984073). It is not Sisyphus Muscle Push, Push A Rock, or +1 Muscle to Arm Wrestle — those are separate Roblox titles with different mechanics, developers, and code lists.

Fan wikis complement but never replace official channels. Like and Favorite the Roblox experience to receive update notifications when code milestones or new worlds arrive. For promo codes specifically, trust only the active codes page after verification — not recycled strings from Sisyphus Muscle Push, Push A Rock, or +1 Muscle to Arm Wrestle.