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An herbivore would not need venom to kill prey, it could of retained it from previous ancestry, hence the reduced toxicity.....talking Iguanidae here.
Yeah Beardies are Agamadae, I dont see why they have thme listed other wise. But it seems Pogona barbata has been found to have some venom,as have monitors,and Iguanidae.
See the section.....its wikipedia but here it is...
Venom and bacteria in the Komodo dragon and other monitors.
Komodo dragons have recently been discovered to produce a venom. In late 2005, University of Melbourne researchers discovered that Perenties (Varanus giganteus), other monitors and Iguanians may be somewhat venomous. Previously, it had been thought that bites inflicted by these lizards were simply prone to infection because of bacteria in the lizards' mouths, but these researchers have shown that the immediate effects are caused by mild envenomation. Bites on human digits by a Lace Monitor (Varanus varius), a Komodo dragon and a Spotted Tree Monitor (V. scalaris) have been observed and all produced similar results in humans: rapid swelling within minutes, localized disruption of blood clotting, shooting pain up to the elbow, with some symptoms lasting for several hours.
In addition to the venom, dragons also possess virulent bacteria in their saliva, of which more than 28 Gram-negative and 29 Gram-positive strains have been isolated.[25] These bacteria cause septicemia in their victim; if an initial bite does not kill the prey animal and it escapes, it will commonly succumb within a week to the resulting infection. The deadliest bacteria in Komodo dragon saliva appears to be a very deadly strain of Pasteurella multocida, from studies performed with lab mice.[26] Because the Komodo dragon appears immune to its own microbes, much research has been done searching for the antibacterial molecule in the hopes of human medicinal use.
Pogona barbata- Eastern Bearded dragon
Venom
In late 2005, University of Melbourne researchers discovered that Komodo Dragons (Varanus komodoensis), Perenties (V. giganteus), other Monitors, Gila Monsters (Heloderma suspectum), Iguanians such as Pogona barbata and Beaded Lizards (Heloderma horridum) are somewhat venomous. Previously, it had been thought that bites inflicted by these lizards were simply prone to infection because of bacteria in the lizards' mouths, but these researchers have shown that the immediate effects (at least in the Komodo Dragon, Spotted Tree Monitor (Varanus scalaris) and the Lace Monitor) are caused by mild envenomation. The Eastern Bearded Dragon, "retains characteristics of the ancestral venom system, namely serial, lobular non-compound venom-secreting glands on both the upper and lower jaws .
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