Video captures happy bull enjoying scratch from vet

A video of a huge bull enjoying being scratched at a bovine semen collection and storage centre has become an internet hit.

Three-year-old 'Porterhouse' was captured on video at Tararua Breeding centre in Woodville. 

The 1,056 kilo bull from KayJay Angus stud is there to semen collected for export and sale.

The video was posted to social media with the caption: '"We are always happy to help our boys, especially when they have that itch that they just can not reach on their own!! "

It has been viewed and shared thousands of times.

Watch the video.