Abigail Ellis, 28, and Stephen Joynes, 36, are due to go on trial at Sheffield Crown Court next year following the death of their son Elon-Jase Ellis-Joynes at a house in Welfare Road, Woodlands last September.
Both have denied being in charge of the family's Chow Chow-cross called Teddy that killed 12 day old Elon on September 13, 2020.
The pair denied owning or being in charge of a dog dangerously out of control causing injury resulting in death when they appeared before Sheffield Crown Court yesterday. They were pictured arriving for their court appearance.
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The pair spoke only to confirm their dates of birth and to enter their pleas before the Recorder of Sheffield, Judge Jeremy Richardson QC.
They were granted unconditional bail and a trial - expected to last five days - has been set for next July.
The court also heard that the dog had since been destroyed.
The pair were both arrested on suspicion of gross negligence manslaughter following the death.
A private funeral service for Elon-Jase, who was born on September 1, took place on October 2 and an inquest into his death was opened by Doncaster Coroner Nicola Mundy last year.
The inquest hearing was adjourned while the police investigation continues.
A number of floral tributes were left outside the family home in the aftermath of the attack while friends, relatives and neighbours paid tribute on social media.