They can slobber if you tip them head down, they have saliva just as all animals do. Its unusual and should rightly raise RI suspicion but I'd first do my own health check. Is it bubbling at the mouth and nostrils? Is it gasping or gaping? Has it got something stuck in its mouth? Is the mouth overly wet now?
Or did you just tip it head down and a bit of the saliva they normally have dripped out?
If you are at all unsure though it is always best to seek advice of a specialist vet.
Funnily enough my corn slobbered all over the place tonight, I was feeding him and he got stuck at the back legs eating backwards, after about 10 minutes and not getting anywhere he just gave up and all the saliva he had built up to swallow just rolled out of him. Turned the mouse round and he got it down.
Keep an eye on things, I dont think its anything to worry about without any other symptoms but be vigilant.
Aye as Bob says - I've had Pandora drool an 8ft boa size'd load of drool over my foot once >.> never before or again after, no health troubles from her.
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