Police were called to 800 Deer Park Ave. last Sunday when a man discovered a Labrador mixed breed with serious injuries including fractures to her head, face, trauma to the body and a broken forearm.
After an investigation, detectives arrested Steven Errante, in Mastic Friday night and charged him with the beating.
Police say further investigation revealed Errante had also assaulted an adult male previously.
Errante, 26, of 800 Deer Park Ave. in Dix Hills, was charged with Aggravated Cruelty to Animals under the NYS Agricultural and Markets Law, and Assault 2nd Degree.
The dog was transported by police to an emergency veterinary clinic and then transferred to an animal hospital, but she had to be euthanized.