After a successful mate, the Compy lays a fertilized egg. Incubation temperature must stay between 24°C and 32°C - use Air Conditioners, Standing Torches, or Dimetrodons to maintain the range. At the correct temperature, the egg hatches in approximately 49 minutes.

After hatching or birth, the baby Compy matures at a medium pace, reaching adulthood in about 21 hours and 2 minutes at 1x maturation. Hand-feeding is required until 10% maturation. After that, a Feeding Trough handles the rest.

Mutations can add +2 levels to any stat and change colors. Stacking mutations across generations is the key to min-maxed breeding lines. Use the breeding calculator to plan food requirements, incubation timers, and maturation phases.

The Compy's growth progresses through three stages: Baby (0–10%) lasts ~126 min and requires constant hand-feeding. Juvenile (10–50%) spans ~8h - it can eat from a Trough now. Adolescent (50–100%) takes ~11h - continues eating from troughs, nearly fully grown.

Imprint bonuses are significant: a fully imprinted Compy gains 30% extra damage and damage resistance with its imprinter mounted. Imprint requests include cuddling, walks, and specific kibble - check the wiki for which kibble to stockpile.

Planning a mass raise? The Compy raising calculator breaks down food needs per phase so nothing goes to waste. The Baby phase (0–10%) takes ~126 minutes and is the most hands-on, requiring direct feeding or a Maewing.

Raising multiple Compy simultaneously? Set the dino count and the calculator scales food requirements automatically. Match your food choice to your play schedule - longer spoil timers mean less babysitting.