Associated Press – A critically endangered Puerto Rican toad was for the first time born via in vitro fertilization as U.S. scientists attempt to save it from extinction, officials announced Friday.

Olaf – named in honor of the frozen semen he came from — is the first of more than 300 Puerto Rican crested toads that hatched after the first attempt failed, Diane Barber, ectotherms curator at the Fort Worth Zoo in Texas, told The Associated Press.

“We don’t typically name our toads, but that one deserved special recognition,” she said via phone. “We were super, super excited. … You kind of hold your breath for 30 days to see if they’re…

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