"The teenager was one of several who were guests at the owner's house."
Oh, to have been one of the other guests whilst this was taking place....
"This was an act of senseless cruelty against a defenceless animal."
Actually it seems pretty mild to me. If they want an example of senseless cruelty to a defenceless animal, all I ask is that the RSPCA pass me this scrotes details, and arrange a weekend where I can get up to Harrogate.
I'll send a quick list of my requirements.
I am pretty sure I can beat the current record of 1/2 an hour too.