Parents, Tara and Brian O'Byrne, and doctors in County Louth, Ireland were shocked after an 11-week-old baby appeared to grow a "fang tooth" overnight.
Last Monday, Tara and Brian noticed that something was unusual when their infant, Oscar, spent the entire morning crying.
Upon discovering the peculiar tooth, the couple, who hail from Drogheda, Co Louth, rushed their son to Our Lady of Lourdes Hospital.
"I went in to him around 7am. I usually give him a soother and he goes back asleep for an hour, but he kept crying," Tara said when speaking to the Irish Daily Mirror. "So I took him out and changed him but when I went to feed him, I found the tooth in his mouth. It had grown overnight."
Doctors were, understandably, baffled.
"They were debating whether it was a tooth or not. They kept calling other doctors in - they didn’t know what to do," Tara continued.
Doctors at Our Lady of Lourdes Hospital eventually called Temple Street Hospital for advice, and the parents were put in touch with a dentist in Drogheda who would see Oscar.
"We got an appointment and brought him in," Tara explained. "I had to hold him and hold his arms down while she took the tooth out."
"Whatever way the suction was caused the tooth to go up his nose. I had to wind him to get it out, but he was okay. There were dentists coming in to take pictures of the tooth and everything. We took it home to show Oscar when he gets older."
Luckily, Tara and Brian were able to see the humour in the situation: "We were terrified at first but now we’re seeing the funny side. Me and my husband were laughing about it, it’s mad - especially at this time of the year!"