Help me guess the breed

Hello fellow dog owners! Before I do the dna testing (Christmas gift for spouse), I would like suggestions on what my new horse could be? He’s woken up very early and very hungry the last few days, so a growth spurt is upon him. I think he’s part boxer, part tigger from the thousand acre forest but maybe you can provide a better clue? I’d like to work out a better training and feeding amount for him. He’s a good puppy but hard to catch pics.