Yes.
at times yes they are but they are not a good pet...
Piglets may shake due to being cold, experiencing fear or stress, or as a way of communicating with their mother and siblings. It's important to ensure piglets are kept warm, provided with adequate shelter, and are not exposed to unnecessary stressors to prevent shaking.
No. platypuses are not permitted to be kept as pets anywhere in the world.
Snails can be kept as pets.
Absolutely not. Kiwi are protected by law and may not be kept as pets anywhere in the world.
They are commonly kept as pets, so the answer would be yes
No, lions are not meant to be kept as pets.
Yes
no, penguins should not be kept as pets, no wild animal should
Uhm. A pecan is a nut. If you kept that it would be weird.
No, opossums are wild animals and are not suitable to be kept as pets.
no