These sound like Datana caterpillars and many are not poisonous. They are usually pests of shrubs and trees. There are many of these and are different kinds. See the link below for more ID information:
The caterpillar you are referring to is called the Banded Woolly Bear caterpillar.
Frangipani sphinx moth caterpillar
The life cycle of a yellow and black striped caterpillar typically involves four stages: egg, larva (caterpillar), pupa (chrysalis), and adult butterfly. The caterpillar hatches from an egg and feeds on leaves, growing in size until it forms a chrysalis. Inside the chrysalis, the caterpillar undergoes metamorphosis and eventually emerges as a butterfly with yellow and black stripes.
The butterfly is called the cinnabar moth.
i think so i am pretty sure The caterpillar of a Monarch butterfly is yellow, black, and white striped. There are also many other caterpillar's with similar colors though.
The caterpillar that has black triangles is called a yellow-striped armyworm. It also has the color brown with a white stripe.
The black and yellow caterpillar with spikes is called a "cinnabar moth caterpillar."
The life cycle of a yellow, black, and white striped caterpillar typically involves four stages: egg, larva (caterpillar), pupa (chrysalis), and adult butterfly. The caterpillar hatches from an egg and feeds on leaves, growing in size. It then forms a chrysalis, where it undergoes metamorphosis and transforms into a butterfly. The adult butterfly emerges from the chrysalis and continues the cycle by laying eggs to start the process again.
The name of the yellow and black caterpillar with spikes is the "Eastern Tiger Swallowtail caterpillar."
The Vapourer moth caterpillar is hairy and has red spots on their dark gray or black body. They are not a poisonous caterpillar.
Yes, the black and white striped spider, also known as the zebra spider, is not poisonous to humans.
they are called willow bears