She was devastated he had been hurt.
"I just can't believe it.''
Mr Skinner said Caleb was a fighter but was very concerned about the toddler's current condition.
"He's normally so full of life. It's just devastating.''
Along with the head injury, Caleb had bruises over his entire body, Mr Skinner said.
"He's sedated because there is too much bleeding from the brain at the moment. He's on machines which are breathing for him ... it's not good.''
When Caleb was first taken to hospital he responded for a short time, touching his nose and trying to reach out, his father said.
"It hasn't been good since then.''
Hospital visits are not unknown to the toddler, who has undergone surgery more than once for a bowel condition he was born with.
A 39-year-old Masterton man appeared before Judge Tom Broadmore in Masterton District Court this afternoon on a charge of assaulting a child. He wore a white police-issue boiler suit and stood staring towards the front of the courtroom throughout his appearance.
Judge Tom Broadmore granted interim name suppression and the man was remanded in custody by consent . He is due back in court on March 17.