NATIONAL -- A Texas man says a dead rodent was found inside his grandson's bottle of Dr. Pepper soda. The grandfather and the soda company are now at odds over what to do next.

John Graves says his 3-year-old grandson Kayden drank the soda on Sunday, but the toddler didn't finish it. Graves says they put the cap back on, and the next day is when they made the discovery."

Graves says his son-in-law bought the soda from a gas station in Galveston. The owner of the store says all of their bottles come sealed and if anything was inside, it came from the manufacturer

But a Dr. Pepper spokesperson says it's virtually impossible for something to get into one of their bottles.  Graves reached out to the company for answers, but wasn't happy with their response.

"I want to get that rat tested, see where it came from, how it got there and if there's really any medical concerns that we need to be worried about,” said Graves.

Dr. Pepper says it offered to send a courier to pick up the bottle for testing by a third-party forensics lab, but Graves rejected the request.

The company says it cannot do a full investigation unless it can review the bottle. The family took the little boy to the pediatrician. The doctor took blood and urine samples and contacted the state of Texas and the CDC.