Not probably useful for the show due to the lack of a question, but this is interesting and probably good for the Animals General Ignorance book.
The duck billed platypus is not the only poisonous mammal.
Inthroducing the short-tailed shrew:
The short-tailed shrew is the only poisonous mammal in North America. The poison is both a neurotoxin and a hemotoxin. The poison is produced by the submaxillary salivary gland, and is present in the saliva. It acts as a slow poison, and immobilizes insects and other prey. Immobilized insects remain alive for three to five days, and provide a source of fresh non-decomposing food. These shrews have a particularly strong musky odor. For this reason, some predators, such as foxes and bobcats, may kill these shrews but not eat them.