The abilities of man must fall short on one side or other, like too scanty a blanket âSir William Temple. The ability to make a great individual fortune â¦ is a sort of sublimated instinct in a way like the instinct of a rat-terrier for smelling out hidden rats âIrvin S. Cobb.
Puppies can begin to be weaned off nursing and onto solid food by around three to four weeks of age. Weaning should be complete by seven to eight weeks of age. Weaning should be a slow and gradual process of reducing a puppy's dependence on milk.
I myself am police dog handler. The earliest a pup should be weaned and could be sold is 8 weeks any sooner than that and you may have development problems with the pups. I sold some pup 6 weeks ago and I did not let them go until 10 week. On the other hand I would not like to keep them for any longer than 12 weeks. Source(s): My father is trainer.