Antirrhinum is a genus of plants commonly known as dragon flowers, snapdragons, and dog flowers because of the flowers' fancied resemblance to the face of a dragon that opens and closes its mouth when laterally squeezed. They are native to rocky areas of Europe, the United States, Canada, and North Africa.
The common name "snapdragon", originates from the flowers reaction to having their throats squeezed, which causes the "mouth" of the flower to snap open like a dragon's mouth. It is widely used as an ornamental plant in borders and as a cut flower. It is perennial but is usually cultivated as an annual plant.
While their actual origin is unknown, it's believed that snapdragons were originally wildflowers in Spain and Italy. This flower originated in the Mediterranean area but now thrives in the UK when planted in well-fertilized soil in full sun.
Snapdragons are non-toxic and will not poison humans or animals. If a human or animal consumes large amounts of snapdragons, they may have an upset stomach or experience vomiting.