Administrator & LOTR Addict
Join Date: Apr 2000
Location: Bloomington, IN, USA
I have never heard of these. Grip is genetic in the GSD. Fullness comes from prey. The hardness and power from aggression (from either prey aggression or fight drive). It is all genetic. Yes, I am simplifying things so don't everyone freak out. You aren't going to create a hard grip with a toy (though as someone said earlier, the leather is good for when a young dog is lazy).
As far as your friend's dog. See if he can get the dog to fight with him on the tug. Deja had little toy drive as a young dog. She did like to fight with me which I was able to transfer to a toy. In protection she never would "play" with a helper. No pillows or rags and had no interest until she could actually, in her mind, bite the guy and fight with him.
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SG1 Deja IPO3 AWD1 KKL1 B/HOT, SG Elena IPO1 KKL CGC B/HOT, LB (the ugly little sable) IPO2 KKL B/HOT, and gone but not forgotten, Vala SchH3 AWD1 FH2 CGC B/HOT, Donovan IPO1 TR2 AD, Nike SchH1 OB1 TR3 AD CGC HOT, Treue SchH3 CD CGC HOT