We use these ones and our boy absolutely loves them: Amazon Brand – Wag Training Treats for Dogs (Chicken, Peanut Butter & Banana, Hip & Joint) https://www.amazon.com/dp/B07QMN1RZ9/ref=cm_sw_r_apan_glt_i_9FGDGND8GD2QKFXHHQ2J?_encoding=UTF8&psc=1

We've also used these ones too and he likes them as well: Blue Buffalo Blue Bits Natural Soft-Moist Training Dog Treats https://www.amazon.com/dp/B08XY91T66/ref=cm_sw_r_apan_glt_i_78XDGEYF5R9EVDNV7B40