Calf Bull Builder
The Calf Bull Builder is an animal from FarmVille. Internal or unfinished items with no way to obtain them.
Mastery
Mastering this animal earns a mastery star at each stage:
| Star | Harvests needed | Coins | XP |
|---|---|---|---|
| ★ | 5 | 500 | 25 |
| ★★ | 100 | 1,500 | 75 |
| ★★★ | 500 | 5,000 | 250 |