Which animal is poisonous and feeds mainly at night?

There are many animals that are poisonous and feed mainly at night, so it's hard to give a single definitive answer! Here are some examples:

Mammals:

* Short-tailed shrews: These small mammals have venomous saliva that they use to paralyze their prey, which are mostly insects. They are active at night.

Reptiles:

* Many species of snakes: Many snakes are venomous and nocturnal, including vipers, cobras, and some pythons.

* Gila monsters: These large lizards are venomous and mainly active at night.

Amphibians:

* Poison dart frogs: While not strictly nocturnal, these frogs are most active at dawn and dusk. They have highly poisonous skin.

Insects:

* Scorpions: These arachnids are nocturnal and have a venomous sting.

* Centipedes: Some centipedes are venomous and mostly active at night.

Other:

* Pufferfish: These fish are highly poisonous and mainly active at night.

It's important to remember that many animals that are poisonous or venomous are not inherently aggressive and will only attack if they feel threatened. It's always best to admire them from a safe distance and respect their natural habitat.