I have great news, I found The Secret Life of Pets concept art! These look great, and we can see early concept art for Max and other pets. Enjoy!

Links: [1] [2]   The last picture is from Eric Guillon's blog.

UPDATE: I found more concept art!

And from here you can find more, but it's wierd that some characters are named wrong. And there's a dog that named Iris, must be deleted character.

UPDATE 2: More concept art from Eric Guillon and Louis Thomas!

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