Please click to enlarge.
Note what signs you see.
W. Bins et al. made this observation (cited in p.205, Fig. 23-4 “Congenital Malformations” by J. Warkany, 1971).
Cyclopean-type malformation in a lamb, centrally located single eye, proboscis above and left to the eye and absent premaxilla bone. The anomaly is induced by maternal ingestion of a range plant Veratrum Californicum.
NOTE: classic example of teratogenic impacts of environmental factors. See other related images under “holoprosencephaly”, “cyclopia”, “Patau syndrome” or “13+ trisomy”, or “proboscis”.
SEE: related images and impending holoprosencephaly gallery.