Reuben McNulty died at Addenbrookes Hospital, Cambridge, on December 13, aged just five-weeks-old. The inquest was opened at Lawrence Court, in Huntingdon, today (Monday) and will resume on May 16. Coroner David Heming told the inquest that one of the familys two dogs attacked the baby and caused the injuries to the brain and that further complications of renal failure and gastric problems resulted in his death. He said: The catastrophic injuries were as the result of him being attacked by a bull terrier at the home address. The official cause of death was: Severe traumatic brain injury consistent with a dog attack. Mr Heming said: The circumstances surrounding this tragic death are devastating for the parents and extend them my condolences and express my sympathy. Two Staffordshire bull terriers were removed and placed in police kennels. Cambridgeshire Police said the two dogs have since been put down.