Updated

A Texas woman whose dogs were killed after being fed antifreeze is offering a $4,000 reward for information leading to the arrest of the person responsible for the dogs' deaths.

Owner Danielle Shelton said she knew right away when her two boxers, Bruno and Nala, weren’t feeling well, she told MyFoxDFW.com.

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"They started looking wobbly and running into walls and then I took them to the ER," she told the website.

Police originally focused on Shelton’s neighbor, who posted a comment on Facebook last year in reference to feeding dogs antifreeze.

"I'm going to accidentally spill some antifreeze over their fence," Ashley Ogle wrote in the post, according to a Fort Worth police report.

Ogle insists she is innocent, and cops are no longer considering her a suspect despite neighbors' suspicions. "I have dogs of my own so I could never do anything like that," she told MyFoxDFW.com.

A test conducted by Shelton's veterinarian confirmed the dogs were poisoned with antifreeze. The dogs also had ingested chicken bones, something Shelton said she would never feed them.

Shelton's shepherd mix also was killed after being fed antifreeze two years ago.

"We need to find out who did this," she told MyFoxDFW.com.

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