Caution or Prosecution?

Pictured: The PC and the dog he is accused of killing by locking him in a car on a blazing hot day, courtesy of the Daily Mail.

I wonder if the officer will be prosecuted?

Will a deal be struck with the RSPCA where the officer accepts a caution and the prosecution is dropped?

If that happened, according to Jones v Whalley [2006] UKHL 41, it would be difficult to begin another private prosecution.