York, Eric (1970-2007) biologist killed, age 37, by pneumonic plague after autopsying a mountain lion in the Grand Canyon.

Young, Paulo Secchin (1960-2004), a world authority on barnacles and an inveterate collector of crustaceans of all types, was killed, age 44, in an automobile accident in northeastern Brazil, while on a field trip.

Yudakov, Anatoly (1938-1974), Russian zoologist who mostly studied Siberian tigers, died, age 36, after being crushed by a falling tree in Ussuriland