21st-century American zoologists

Richard William Timm (March 2, 1923 – September 11, 2020) was a Catholic Priest, educator, zoologist, and development worker. He was the Superior of the Congregation of Holy Cross in Dhaka and a member of the Sacred Heart of Jesus Province. He was also one of the founders of Notre Dame College in Dhaka, Bangladesh. He was the 6th principal (1970 to 1972) of Notre Dame College.
Born with German ancestry from both sides on March 2, 1923, in Michigan City, Indiana, USA, Timm is the second of four siblings – elder brother Bob, who died on Okinawa in World War II, and younger sisters Mary Jo Schiel and Genevieve Gantner.

Robert Gravem Webb (18 February 1927 – 18 September 2018) was an American herpetologist, expert in the systematics and biogeography of reptiles and amphibians, and professor emeritus of biological science at the University of Texas, El Paso.Webb received his Ph.D. in zoology from the University of Kansas in 1960.Webb had over a hundred publications to his name. He specialized in amphibians and reptiles of the southwestern United States and Mexico.The snake Lampropeltis webbi is named after him.

Dr. Juan Arturo Rivero Quintero (March 5, 1923 in Santurce, Puerto Rico – March 3, 2014) was a Puerto Rican biologist who founded the Dr. Juan A. Rivero Zoo at the University of Puerto Rico's Mayagüez Campus.