The Guinness World Record has started an investigation to determine the true age of Bobi the world’s oldest dog who passed away in October 2023.

Bobi, a purebred Rafeiro do Alentejois the oldest verified dog in history, according to the Guinness World Records, died at the age of 31 years 163 days.

However new information has since come to light with the suspicion of the true age of the dog.

Speaking to CNN, the spokesman for the Guinness World Record stated that formal review occurs when a record title is challenged and involves analyzing existing evidence, seeking new evidence, reaching out to experts and those linked to the original application.

“While our review is ongoing we have decided to temporarily pause both the record titles for oldest dog living & ever just until all of our findings are in place,”

Bobi was announced as the world’s oldest dog living and oldest dog ever on February 2, 2023 by the Guinness World Record.

Bobi’s age was also verified by SIAC, a pet database authorized by the Portuguese government and managed by the SNMV (Sindicato Nacional dos Médicos Veterinários; National Union of Veterinarians).

He was registered in 1992 with Serviço Medico-Veterinário do Município de Leiria (Veterinary Medical Service of the Municipality of Leiria), who confirmed his birth date.

The Portuguese pup belongs to a breed of livestock guardian dogs with an average life expectancy of 12 to 14 years.

Bobi had broken a previous century-old Guinness World Record in February, claiming the honour from Australian cattle dog Bluey.

Bluey, the previous oldest dog ever, died in 1939 aged 29 years and five months.