Galaxy of Ghouls, a reprint-anthology edited by Judith Merril. Later editons were re-titled Off the Beaten Orbit (1959, 1961.)

Contents:
"Wolves Don't Cry" by Bruce Elliott
"The Ambassadors" by Anthony Boucher
"Share Alike" by Jerome Bixby & Joe E. Dean
"Blood" by Fredric Brown
"A Way of Thinking" by Theodore Sturgeon
"Child's Play" by William Tenn
"O Ugly Bird!" by Manly Wade Wellman
"The Wheelbarrow Boy" by Richard Parker
"Fish Story" by Leslie Charteris
"Desertion" by Clifford Simak
"Triflin' Man" by Walter M. Miller, Jr.
"The Night He Cried" by Fritz Leiber
"The Demon King" by J. B. Priestley
"Proof of the Pudding" by Robert Sheckley
"Homecoming" by Ray Bradbury
"Mop-Up" by Arthur Porges

2 stories are from 1947, the rest from 1952 to 1955 - originally appeared in The Magazine of F&SF (4), Startling Stories, Beyond, Astounding (2), Liliput, Bluebook, Fantastic Universe, Galaxy, Madamoiselle, E. Pluribus Unicorn, Star SF Stories, My Best Thriller.