What is the primary underlying reason for mild digestive discomfort if a pet heavily grazes on sweet alyssum?

Answer

The stomach is unaccustomed to processing fibrous material

Minor digestive discomfort results because the pet's stomach is not accustomed to processing the fibrous material found in the plant.

What is the primary underlying reason for mild digestive discomfort if a pet heavily grazes on sweet alyssum?
plantToxicitySafetysweet alyssumpet