My deer fence boarders some of our cattle fence, I get a kick out of seeing the buck fawns run up and "charge" the cattle, it's like they are trying to pick a fight, but all the cattle have to do is look at the buck fawns and they step back, lol, but the little bucks sure do like to try to feel tough this time of year.
None of the other deer blink an eye at the cattle, I have seen my deer bedded on their side of the fence and the cattle are right on the other side of the fence bedded.
I have heard of people warning me of possible disease transfers from the cattle to the deer through cattle manure, but with the small number of cows, and the small number of deer we have, I never worried to much about it. Our cattle pastures are green and lush, not all tramped down to the mud with overcrowding.
Free town, I once thought about raising an elk with my deer, but the AG told me that was a no-no, they said I needed separate pens for separate species. That was when I was a certified herd, but now that I am monitored I may be allowed to do it, I haven't checked into since becoming monitored