It's difficult to say exactly what's causing your pets' behaviors. Although you occasionally find adult rat snakes in homes, the juveniles are the most frequent visitors. The cat could be picking up the scent left behind by a snake crawling along the floor, but, as you mentioned mouse droppings, it could be tracking a mouse. The fossil record of snakes is relatively poor because snake skeletons are typically small and fragile making fossilization uncommon. Fossils readily identifiable as snakes (though often retaining hind limbs) first appear in the fossil record during the Cretaceous period. The earliest known true snake fossils (members of the crown group Serpentes) come from the marine .
Do NOT disregard the bites of small or juvenile venomous snakes. They are born equipped with venom that is just as potent as adult venomous snakes. Wear appropriate PPE and protective clothing such as snake-proof boots, leather gloves, and long pants when working outdoors. A snakebite is an injury caused by the bite of a snake, especially a venomous snake. A common sign of a bite from a venomous snake is the presence of two puncture wounds from the animal's fangs. Sometimes venom injection from the bite may occur. This may result in redness, swelling, and severe pain at the area, which may take up to an hour to appear.
Nevertheless, even a non-venomous snake will act aggressively when threatened, often striking at its aggressor, rattling its tail, and flattening out its head. Observe snakes, like all wild animals, from a respectful distance. Don't attempt to capture them or keep wild snakes as pets. Many snakes feed on tadpoles, adult frogs and. Snake - Snake - Egg formation and laying: Once fertilization has occurred, the egg begins to accumulate additional layers from the shell glands in the oviduct. In some species, this continues until a firm yet pliable leathery shell has been formed, permeable to both gases and liquids but capable of retaining much of its liquid content unless in a very dry place.