KSNV News 3 LV asked expert trainer Mark Gibson about his thoughts on dog behavior.

LAS VEGAS (KSNV News3LV) — The dog that attacked and killed a 6-month-old girl Monday was put down this afternoon, according to a Clark County news release.

Kamiko Dao Tsuda-Saelee died of blunt force trauma to the head, according to the Clark County coroner’s office. The attack occurred just before 1:15 p.m. on the 9100 block of West Brilliant Prairie Court, near West Centennial Parkway and North Fort Apache Road.

The pit bull mix was a male, approximately 9 years old.

“The owner surrendered the dog to the County yesterday. A dog that has attacked and killed a person would not be allowed to be adopted,” said Clark County spokesman Dan Kulin.

“Our thoughts are with the grieving family during this difficult time.”

Expert trainer and canine behaviorist Mark Gibson says dogs are pack animals by nature and may feel the need to determine hierarchy when a dominant person or dog is no longer present.

Gibson also says dogs are also known to sometimes be jealous of small children, but most often they just want to play.

“So the dog may have had no malice whatsoever toward the baby,” said Gibson, “but it just got so rough with it that it was having a fun time chomping and biting and the baby was killed because of it.”