Photos taken by Susan Wiseman of Boyertown,,Pa.

While on vacation near La Cruz, Costa Rica, my husband and I were greeted every time we left our hotel room by a group of Black Howler Monkeys, who had taken up residency in the trees surrounding our resort," said Wisean. "Absolutely amazing to see them and hear them howl…could here them all the way at the other side of the resort!!"

"First picture is a juvenile Black Howler Monkey,she said."Second and third picture is a “Momma” Howler Monkey with her baby."