Bad breath
Hell no!
No not knowingly
No! Of course they don't! They have their own food to eat.
No, it is waste and full of harmful bacteria.
Never eat cat excrement.
they ate mostly their own excrement!
They traditionally consume their mothers dung (solid excrement).
No. Only a desperately hungry, Eating bird excrement will make a rabbit sick. If your rabbit tries to eat bird faeces, it should see a vet with experience and knowledge in treating rabbits.
excrement
No, vomit is not called excrement. Excrement is feces.
Some animals such as deer eat apple. Their bodies do not digest the seeds which pass in their excrement. The excrement acts as a fertilizer for the seeds and allows them to grow into trees.
It is not recommended to eat your own feces. That's grotesque. There doesn't seem to be anything you can eat to make the excrement more edible.