Poison gland

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In recent experiments where hedgehogs were allowed access to poisonous toads not native to their environments, all immediately anointed themselves with scented spittle by licking the toads' poison gland, and were unharmed.
The genus had special depressions on the side of its face thought by the investigators to have housed a poison gland, connected by a long lateral depression above the tooth row that delivered venom to a series of long, grooved teeth on the upper jaw.
So if this theropod didn't possess a poison gland, the groove may have served to trap decaying meat and spawn bacteria (microorganisms), Holtz speculates.
For some teens, the acid in the poison glands of ants smells like vinegar and they inhale its pungent fumes to get a kick It's very dangerous, of course, as it can cause serious lung and other diseases," says Dr Al Ai Maidoor.
But recent research found that the dragons' jaws have highly sophisticated poison glands that can cause paralysis, spasms and shock through haemorrhaging.
It has poison glands at the base of each dorsal spine and the anal spines.
Harvestmen, though, lack the poison glands and silk-making ability of spiders, and are probably more closely related to mites and scorpions.
The treatment was essential as the veins connecting the poison glands were damaged.