a good Lab/dog is a tired dog..
I have 2 destroyers..Sam 2yr & Jack 1yr Lab's.
crate trng. is good..but when you release them..
they MUST release all that dog-power..
you come home..out of the box.and what ...
our routine..both of us up 5 /out the door 530 back 630..fast pace
first one home /change and within 30 minutes out the door,again at least 1 hr...
rain or shine..7 days.
good for the dogs..great for her legs and butt..and monthly

...
Rika