Well iam off for now... Some Pittfull Pest has attacked my Other tomb complex. ill be back in a Cycle or more
This is pretty funny, but Sontarans don't actually eat, they instead regain energy by having it somehow channeled into them through the probic vent, so that line is sort of a consistency fail on Moffat's part. =|
That particular Sontaran isn't really meant to be a threat, he's a comedic relief good guy Sontaran who likes to try to breastfeed babies. Like I said, I prefer the classic series Sontarans. Linx and Styre were both awesome.
I quite liked them in David Tennant's timeline, they were appeared as an effective fighting force and capable of conquering.