i have had a vizsla that I used to take up in the Canty back country including winter hunts. Polar fleece dog coat is good, sleeping mat is good as it wouldnt move off it, [I could take a motorbike to my camp so pack size/weight wasnt an issue] . Tent manners is good as winter nights are long.
I would suggest if you need a tracking collar on an indicator dog like a vizsla while hunting you have not got it trained. It should be walking in front of you not off on its own.
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