Tick CBW tactics question.
One of the campus “sponsored strays” was fussing around me on the cafe terrace, and I pulled a tick off its neck.
Dropped it on the ground expecting the dog to eat it (as, in my experience, they usually do elsewhere, though I havn’t done this before in Taiwan) and got on with sugaring my coffee. I think I half noticed the dog nosing the tick, but I wasn’t paying attention.
When next I noticed the dog it’d backed off and was salivating copiously ( “frothing at the mouth” would perhaps be a better description) and working its front incisors together in a scissors action, like they do when they’re grooming) while staring at the tick, but it didn’t approach any closer than 6 ft the rest of the time I was there (maybe half an hour), and seemed to be scared of it.
Anybody know if tick species here have defensive toxins? Makes sense but I’ve never heard of it before.
I suppose a sting would be an explanation too, though that seems a rather big adaptation.
I suppose it could also just be that Taiwanese dogs are pussys
I’m afraid I burned the tick (I don’t like them) so the evidence is gone. Some biologist, huh? 
EDIT: I did another search (first one was masked by stuff about toxicity of treatments), and apparently they produce a neurotoxin which can induce systemic paralysis in 24 hours (useful to know), but I didn’t find anything directly comparable to this observed “instant reaction” behaviour.
I wonder if it could have been a hypersensitive immune response?
ENDEDIT