Pictured: The giant 11-month old baby who is already the size of an eight-year-old

The giant baby tips the scales at a whopping 61lbs 12oz (28kg) and stands four and a half stone larger than his older brother. Due to his hefty frame the toddler also has to wear huge nappies.

His mother, Milena Orosco de Agudelo, said her son started ballooning at just two months old.

Weighty issue: The baby is just 11 months old

The baby has had undergone a number of medical examinations which suggest he may have a problem with his endocrine system.

Ms Orosco said: 'He had some tests done and the results show that he has a thyroid malfunction.

'Then, he had a cardiogram test done and that test shows that he has the bones of an eight-year-old boy, but they have not told me where that came from.'

The normal weight for a boy his age is between 13lbs 4oz and 15lbs 7oz (6-7kg) and now baffled doctors in Colombia are trying to work out how he became so big.

Doctor David Dias, of the Barranquilla Pediatric Hospital, said: 'The baby will undergo more tests to see if he's obese or we're dealing with hyperthyroidism.'

Big hugs: The baby's mother, Milena Orosco de Agudelo, says he began to balloon when he was just two months old

See footage of the giant baby here: