Deformed Yearling Lamb.

Deformed Yearling Lamb.
Cranial deformities due to abnormal development during the organogenesis stage, as a result of ingestion of Veratrum californicum by the dam just before or just after Day 14 of gestation. Ingestion on Day 14 would have resulted in derangement of the pituitary gland and failure by the fetus to trigger parturition at term.

Drost M (1967)