Seed: 1926444278
What I expected:
Sheep spawn as per normal.
What happened was:
No sheep.spawned..
MC-72851
No sheep spawning in my survival world
Resolved
Invalid
0
Mob spawning (like sheep), is semi-random, and if you aren't finding any, it's purely bad luck. Note that passive mobs can randomly spawn on grass, so it is possible to make them spawn after chunk generation.