Bull arab?

Sorry for the delay guys, I missed the questions.
First one first, they will often get little skin rips or small punctures but injuries that require staples or stitches let alone the vet are surprisingly uncommon. Our dogs are not terribly stylish in working a pig, they just smash into them head on if the pig is standing or run beside them and grab if they are moving. It might be that the country is different (although we have blackberries and other tangled stuff that increases risk of injury) or it might be the lack of other dogs bumping into one another. I don't really know and don't know how it would relate to the US situation.
Maybe one (proper) boar in 20 might produce a stitchable wound. Real injuries, life threatening could happen on the first boar you see but maybe one in 50 really cut the dogs up. We dont (and the bull arab blokes) don't religiously go one out on boars but most don't go with more than two dogs because it ends up a bit of a tangle.

On sizes, anything from 25 kgs to 40 kgs will do the job but ideally I like the 30 kgs range (a kg is 2.2 pounds) so a b it better than 60pounds. Height, I'd be guessing, I'll measure some of ours. For us it's not so much the size of the dog as it's will and athleticism.
Cheers.