It's called the cave squeaker.
Researchers in Zimbabwe spotted the Arthroleptis troglodytes after it had avoided human sighting since its discovery in 1962. An international conservation list labeled the cave squeaker as critically endangered and possibly extinct, the New York Times reported.
But the researchers didn't just find one amphibian. They found four.
The discovery came in December 2016 when the research team stumbled upon the cave squeakers' natural habitat of Chimanimani, a mountainous area in eastern Zimbabwe.
Seventy-five-year old Robert Hopkins, a researcher at the Natural History Museum of Zimbabwe, in Bulawayo, said he was looking for the tiny brownish frog for eight years.
“I was not with my team when they were found,” he said. “I was at the base. I can no longer climb the mountains as I am 75.”
The researchers intend to breed additional frogs and then reintegrate them to their mountainous habitat. Their uniqueness and rarity, however, are raising concerns for authorities, who fear the frogs may be susceptible to illegal exportation.