"Hopefully someone will come forward with the reward at $2,000," Danker said.
The original reward was posted after the investigation came to a dead end.
Over the past 18 months, eight dogs have been fatally poisoned in Neola. In some cases, poisoned dog meat was used as bait within kennels on the owners' property.
Stacey Robertson, supervisor with Pottawattamie County Animal Control, said tests have shown the substance used to be highly toxic to children.
Anyone with information leading to the arrest and conviction of the person or persons involved should call the Pottawattamie County Sheriff's Office at (712) 890-2200.
- Emily Kesten