Update: Pit bull that killed Shih Tzu is being held by Animal Care and Control

NEW YORK -- A pit bull that mercilessly attacked and killed a young Shih Tzu Friday afternoon is being held by the city's Animal Control and Care.

Though there were two unleashed pit bulls roaming Delafield Avenue Friday afternoon, only one was involved in the attack, according to Richard Gentles, a spokesperson for the agency.

"That dog is being held by AC&C on a ten-day rabies observation hold as required by law while the NYC Department of Health & Mental Hygiene conducts an investigation," Gentles said.

The shocking assault happened about 2:30 p.m., as Dionis Rembeci, 62, was walking 1-year-old Fluffy. Two roving pits bulls suddenly attacked the helpless dog, ripping it from its leash, according to neighbors.

RIP Fluffy

Dionis Rembeci, who suffered a scrape on his leg and an arm injury while trying to defend his dog, succumbed to shock and fainted, said his son and neighbors. He underwent treatment in Staten Island University Hospital, Ocean Breeze, and is now recuperating at home.

(Staten Island Live - Sept 28, 2013)

Earlier:

• Hellhounds kill Shih Tzu, put Staten Island dog walker in the hospital