7 week old lab will not fit tennis ball in his month.
you can buy the pheasant wings at LION COUNTRY SUPPLY,if you cant find one local.i guess duck wing would be fine if ITS NOT TO HEAVY OR BIG,you want something real light and small.

breeder should have no problem with wing or taking pupanother room.

i did it and i believe it helped.
only do this at 7 weeks as its to hard when they are 5/6 weeks old to tell anything.

you are not trying to get lab to bring it to you, thats great if she does, you main thing is NOSE.if she sniffs and shows interest,trying to pick it up or tear it apart, that dog to get.

if she shows no interest,i would pass on that one.