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"The incident is still an allegation until such a time that a witness provides evidence to support the allegation," Michelle Roache, a spokesperson for the Los Angeles County Department of Animal Care & Control told People mag.
The victim was a 3-pound Maltese named Tiger who was roaming the hallway without a leash, the gossip site reported.
Following the alleged attack Ronson tweeted her condolences.
“There is absolutely nothing I can say that will alter one minute of today, nothing,” she wrote. “I feel incredibly sad and wish I could offer more than condolences, unfortunately there are no words to describe how sorry I am.”