I've an 8 week old German Shepherd. We've had him nearly 2 weeks.

We're feeding him a mixture of raw meat/organs and dried large breed puppy food.

He's very friendly and gentle, and is gaining size/weight at a rate of around 1kg/week.

The issue is that with the diet he's on, he's not really keen on treats. I've tried several different types, but he's either not hungry, or they're not appetising enough for him to get excited about. He doesn't even eat them.

Whenever I take him out into the garden, he's used to going to the same place and doing his business, I then shout him in and praise him heavily. This gets him excited, but I've no treats to reinforce this with.

I feel it's partly due this that he's still peeing indoors and there's no warning he's about to do it. 

Any advice, as this is my first puppy since adulthood.

Thanks.