Rankings
Survive Lava for Animals eggs rankings from S through D. This is an editorial board from published topics, not a live meta snapshot.
Player guides for Roblox Survive Lava for Animals: train Speed, steal eggs past lava, hatch animals, and set offline earnings.
S and A are the eggs worth planning a run around once you can survive that stage. B and C are earlier targets that fund the climb and then give up their pen slots. A letter is not a license to attempt Mythical on starter Speed. If you die on the way home, the lower biome you can clear is the better farm.
A stable species list with cash rates was not published for this experience. Thumbnail overlays that show a huge dollars-per-second figure are promotional art, not a pen tooltip. Rank the biome you can clear, then compare the animals you actually hatch.
No. Grass is the right farm until Desert returns work. The low letter means those animals should not stay forever once stronger hatches fit in the pen.