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I don't know what is a good treat for a 9 wk. puppy, cause I didn't get Bonnie til she was 14 weeks.
But at 14 weeks, I gave her tiny bites of boiled chicken and tiny bits of low fat cheese for training.
As she got older, she got zukes (i like them cause they are small and soft) and pieces of fruit (banana, peach) veggies I was prepairing (green beans, brocolli, carrots)
Now at 18 months, I love Yorkie Yummies for her, Zukes and Charlie Bear treats. She still gets all of the above too.
She will do anything for cheese