It can be either.
Its both
No, an herbivore is anything that feeds on a primary producer - this can include insects, fish, birds, etc.
A non-mammal. It is a kind of jellyfish.
Clownfish are omnivores.
No flies are mammals.
No they can't
A crocodile isn't a mammal it's a reptile.
There is no such thing as a mammal bird. An animal is either a mammal or a bird, it cannot be both. Mammals have fur, give birth to live young and feed those young on milk. Birds have feathers and lay eggs. An impala is a type of deer, with fur and live young, so it's a mammal.
Yes and it is also a herbivore, a ruminant and an ungulate.
The Alaskan brown bear is a mammal and an omnivore.
No a bullfrog is not a mammal. Frogs and toads are amphibians.
It depends on what you mean by non-mammals. If you are counting all matter as a non-mammal, then most non-mammals are not organisms. If you are counting a non-mammal as any life form or any animal that is not a mammal, then all non-mammals are organisms.