Solenodons, short-tailed shrews, the Eurasian Water Shrew, and the European Mole inject venom into prey by biting it; the venom is transferred through teeth. Male platypuses inject venom through spurs on their back legs; female platypuses and both sexes of echidnas also have these spurs, but they cannot inject venom.
there saliva has venom in it
Shrews are not poisonous. They are insectivorous mammals that use venom to incapacitate their prey, but this venom is not toxic to humans. Shrews pose no threat to people in terms of poisoning.
No. A Ring-Tail Possum does not have venom.
Water shrews have a venomous saliva, but they are not able to inject it into a human's bloodstream, as a viper may. Thus, a bite is completely harmless (other than a little blood).
Cuban Solenodon (Atopogale cubana) & Haitian Solenodon (Solenodon paradoxus) Solenodons look similar to very large shrews. They both have venomous bites; the venom is delivered from modified salivary glands via grooves in their second lower incisors.Platypus (Ornithorhyncus anatinus) Males have a venomous spur on their hind legs. Echidnas, the other monotremes, have spurs but no functional venom glands. Eurasian water shrew (Neomys fodiens) Capable of delivering a venomous bite. Northern Short-tailed Shrew (Blarina brevicauda) Capable of delivering a venomous bite. Southern Short-tailed Shrew (Blarina carolinensis) & Elliot's Short-tailed Shrew (Blarina hylophaga) Possibly have a venomous bite.*** I did not edit the above statement because it is true, however "Venomous" and "Poisonous" are two completely different things. Venom is a harmful toxin injected via a bite or sting. Where as Poison is secreted through a gland or glands and is harmful to the touch or by ingestion. The two words are not interchangeable. I do not know of four "Poisonous" mammals, but I do know of one, The Slow Loris (Nycticebus Javanicus). ***
They have venom glands in the back of their mouths that produce a toxin that other organisms react to. Only venomous snakes can produce venom.
No
No they do not produce venom.
anacondas do not produce venom they squeeze their prey to death
Venomous snakes have specific adaptations that allow them to produce and store venom without harming themselves. They have evolved specialized venom glands that produce the venom and fangs or other specialized structures to deliver it. Their bodies have developed immunity to the toxic effects of their own venom.
A snake may, at times, inject all the venom in its venom sacs. It will take a number of weeks to produce more venom to replenish the supply. During this time the snake has no protection and is unable to obtain food. Rattlesnakes may inject all their venom if they are highly agitated or frightened.