Hi, I think I've found boar glue on one of our two male piggies today also, for the first time. I'm sure it wasn't there when I put them in their run at 9:30 but was present about 10:30 when I checked on them. It is a thick strand of solid white gunk, similar to a glue stick, that doesn't smell and is very entangled in his hair a little above and to the left of his scent gland. It is about 2cm long and starts close to or on his skin. There's no sign of an injury or illness for this to be produced from his skin, no evidence of soreness, except when hairs get pulled during examination, and he seems perfectly fine. I've tried washing it, which limited success, and have cut some of it off. Does that sound like boar glue?
Here's a photo -
Here's a photo -