He is or isn't he?

I have received an email from a lady called Karen who lives in California, she has emailed me as she rescued Patch, (pictured above) and was told he was a Cattle dog, Karen doesn't think he is as feels he is a Munsterlander, she has emailed me to see what I think, I have emailed her back to ask about size and weight but would be interested to see what you all think.