Two of the dogs have died and RSPCA inspectors spent all day yesterday rescuing the others from Wardana Kennels in Brigstock.
Many of the animals were found covered in excrement and without water in their cages.
The alarm was raised by a dog owner who had left his pet at the kennels. When he couldn't contact the owner he broke in and was confronted with the distressing sights.
RSPCA inspector Justin Stubbs said: "There was faeces everywhere. You wouldn't expect to see so many big dogs in such conditions. I'll be going home and having a stiff drink tonight."
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