I didn't realise older kitten need as much food as very big cats.

[SunnyAgain]

I have just seen this feeding guide. No wonder our 7 1/2 month olds have such big appetites!
www.millieswolfheart.co.uk/Feeding-Guide-for-Cats/

Yes, it's a bit like feeding a ebf baby, you just keep feeding until they stop eating.

Ours had a "bowl empty" miaow as a kitten, he'd shoot across the lounge at the first sign of me going in the kitchen.

They're teenagers, and therefore bottomless pits just like human teenagers.

I am relieved to know I'm not actually over feeding them, as they seemed to be wanting more food than their weight would suggest, so I'd been topping up their bowls. It all makes sense now!

When I got little Monsieur last summer, he ate the same amount in grams as my neighbour's Labrador!

Yep..definitely teenagers. Mine (especially Obie) appear from nowhere at the slightest sound from the kitchen. And are very loud about demanding more!

Both slim and fit though.. just being teens :)