Pacific Treefrog

Pacific Tree Frog

Pacific Chorus Frog

Pseudacris regilla

This page may contain affiliate links.
Read our disclosure and privacy policy here.

The Pacific Tree Frog, also known as the Pacific Chorus Frog, is a small and colorful amphibian that is widely recognized for its distinct call. These frogs are found in various habitats across the western United States and Canada, including forests, grasslands, wetlands, and even urban areas. Pacific Tree Frogs have a vibrant range of colors, including shades of green, brown, and sometimes even blue or gray. They have a small size, typically reaching around 1.5 to 2.5 inches in length. They are well-adapted to living near water and can be found in ponds, marshes, and streams. The Pacific Tree Frog’s distinct vocalizations, including their iconic “ribbit” call, are not only a common sound of spring but also serve as a means of communication and attracting mates. They are known for their ability to produce a variety of calls, including trills, chirps, and other unique vocalizations.

Pacific Tree Frog

Common Name
Pacific Tree Frog

Other Names

Pacific Chorus Frog

Latin Name

Pseudacris regilla




Pacific Tree Frogs exhibit a wide range of colors and patterns. They can be green, brown, tan, or even reddish. Their bodies are small and compact, with a smooth and moist skin. They have round eyes with vertical pupils and a distinctive dark mask-like pattern that extends from their eyes to their shoulders. They also have adhesive toe pads that enable them to climb trees and plants.


These frogs are relatively small in size, typically measuring around 1.5 to 2.5 inches (3.8 to 6.3 cm) in length. Females tend to be slightly larger than males.


Pacific Tree Frogs are adaptable and can be found in a variety of habitats, including forests, grasslands, wetlands, meadows, and even urban areas. They are particularly associated with areas near water bodies such as ponds, marshes, streams, and ditches.


These frogs are primarily active at night and are skilled climbers. They are arboreal, meaning they spend a significant amount of time in trees and shrubs. During the day, they seek shelter in vegetation or under logs and rocks. They are known to be territorial and will defend their chosen areas.


Pacific Tree Frogs are insectivores, meaning they primarily feed on insects and other small invertebrates. Their diet includes flies, mosquitoes, beetles, spiders, ants, and small snails. They catch their prey using their long, sticky tongues.


The lifecycle of Pacific Tree Frogs involves several stages. They lay their eggs in water bodies, usually in shallow ponds or marshes. The eggs hatch into tadpoles, which have gills and live in the water. Over time, the tadpoles undergo metamorphosis, developing limbs and lungs. Eventually, they transform into adult frogs and leave the water to live on land. This process takes a few months.


The Pacific Tree Frog is known for its unique vocalizations, which include a loud and distinctive call that resembles the sound “ribbit.” This call is primarily heard during the breeding season and is used by males to attract females and establish their territory. They produce a variety of other vocalizations, including trills, chuckles, and clicks.

Defense Mechanisms

When it comes to defense, Pacific Tree Frogs rely on camouflage and agility. Their ability to change their skin color allows them to blend in with their surroundings, providing protection from predators. They can also jump and climb quickly to escape potential threats. If captured, they may emit a high-pitched distress call or release a skin secretion that tastes unpleasant to deter predators.

Ecological Importance

Pacific Tree Frogs play a crucial role in their ecosystem. As predators, they help control insect populations, including mosquitoes. They also serve as a food source for other animals, such as birds and snakes. Additionally, their presence and vocalizations are indicators of the health of wetland habitats.

Conservation Status

The Pacific Tree Frog is considered a species of least concern in terms of conservation status. They are widespread and have stable populations. However, habitat loss, pollution, and the introduction of non-native species can impact their local populations.
Let's Go Avocado Team

There’s a lot to explore right where we are, in our own neighborhoods and backyards! Join us while we get off the couch and explore the everyday wonders of nature, science, space, engineering, art, and anything else we stumble upon during on our adventures.

More Posts: