6 months old
take it from one who knows it will get better if you dont hold it back but start it working with a older dog and let it loose with the older dog if you can .the sooner the better.
a pup should have nothing but training for the 1st year ,, let it grow , find its feet and its bearings in the real world ie fences all types barbed and electric , gates , loud noises ect If you rush it you have more chances of ruining it !!
yes mate she is in training but she does come ferreting nand she has had her first rabbit a