Night Fright (1967)

A government space experiment into the effects of cosmic rays on animal life goes horribly wrong, creating a mutant monster that terrorizes a rural community.

Director:

 James A. Sullivan

Writer:

 Russ Marker (story)

Stars:

 John Agar, Carol Gilley, Ralph Baker Jr. - via IMDB 

https://archive.org/details/Night.Fright.movie