Many wonder about the potential toxicity of wild animals, especially those found in backyards. Grey frogs, often seen clinging to windows or tree bark, frequently raise safety questions. While not considered dangerous, these amphibians possess mild defensive skin secretions.
Identifying the Gray Tree Frog
The “grey frog” found across much of eastern North America is one of two similar species: the Eastern Gray Tree Frog (Hyla versicolor) or Cope’s Gray Tree Frog (Hyla chrysoscelis). These frogs are relatively small, measuring between 1.25 and 2.25 inches. Their skin often has a warty texture, and they can change color from grey to green or brown, blending with surroundings like tree bark or leaves.
A distinguishing feature is the bright yellow or orange patches on their inner thighs, visible when the frog jumps. They also have a distinctive white spot beneath each eye. Gray tree frogs are arboreal, primarily living in trees, and are found in wooded areas, suburban gardens, and near water sources. They are nocturnal, active at night, and during the day, they hide in tree holes, under bark, or on the sides of houses.
Understanding Their Skin Secretions
Gray tree frogs are not “poisonous” if touched or ingested, nor are they “venomous” as they do not inject toxins. Instead, they produce mild skin secretions as a defense mechanism against predators. These secretions act as irritants rather than systemic poisons.
The compounds in these secretions can cause irritation or discomfort if they contact sensitive areas such as eyes, mucous membranes, or open wounds. This deters predators, making the frog unpalatable. While not life-threatening to humans or pets, the secretions cause a temporary, unpleasant reaction.
Safe Handling and What to Do
Direct handling of gray tree frogs should be avoided to minimize human exposure to their secretions and stress to the frog. If accidental contact occurs, wash hands thoroughly with soap and water immediately. This helps remove any irritants or bacteria transferred from the frog’s skin.
If secretions get into the eyes, mouth, or nose, mild irritation, a burning sensation, or temporary numbness may occur. Flush the affected area with clean, cool water for at least 15 minutes. For pets that mouth or lick a gray tree frog, rinsing their mouth with water can help. Monitoring them for symptoms like drooling, vomiting, or pawing at their mouth is recommended. While severe reactions are rare, consult a veterinarian if symptoms persist or worsen.