Thanks, Auggie! this is very helpful.
We have a few goats and 2 cows, and we're starting to think about the next steps. Adding sheep to graze with the cows probably makes the most sense, and if it weren't for the anticipation of milk from the cow (she's not pregnant yet) we might consider only sheep.
Pugging from cows is indeed an issue for us, and those few days that they're cranky and get out of the fencing, their size makes things much more challenging.
For our goats - they're amazing at clearing brush and we have given up on fencing them. Each gets its own stake and tether, and that works pretty well. We haven't butchered on yet but I'm assuming that wethers probably have less of the gamey taste that people associate with goat.