39K views · 665 reactions | Do you recognize this sound? Considered by many as the announcement of spring, this distinct, loud, high-pitched “peep” is the call of a spring peeper. More often heard than seen, these very small, pale-brown frogs can be recognized by the X-shaped mark on their backs. #WildlifeWednesday | NYS Department of Environmental Conservation | Facebook

11K views · 569 reactions | How do you define the term "spring peeper" ? 1⃣ Any frog I hear in the spring 2⃣ Anything peeping in the spring 3⃣ Pseudacris crucifer 4⃣ Any frog, I am chaotic and possibly evil 5⃣ Stop it, I live in the west  Megan Seymour/USFWS. A spring peeper's vocal sac inflates as it makes several short "peep" calls. | U.S. Fish and Wildlife Service | Facebook

22K views · 261 reactions |  Spring peepers are known for their high-pitched mating call, a sound they repeat about 20 times a minute. But did you know that the faster and louder they sing, the better the chances of attracting a mate?  What do you think about this peeper’s chances? #WildlifeWednesday | West Virginia Division of Natural Resources | Facebook

VOLUME UP: A sure sign of coming spring! Reed Timmer Extreme Meteorologist recorded spring peeper frogs chirping at sunset in Greenville, North Carolina: | AccuWeather