Known as:  Flax
Latin Name: Linum ustatissimum
Description: Small simple alternate leaves,  Five-petalled flower.  Feathery look to the plant.
Poisonous Parts:  Entire plant, especially immature seed pods.  Cyanogenetic and goitrogenic.  May contain toxic levels of nitrates.
Symptoms: No information available at this time.
Treatment: Contact your veterinarian.

Image courtesy of Brousseau California Flora Photos.