Sometimes yes but sometimes no. You see, if a bird is heavily breathing, it could just be yawning. But if it's breathing heavily on a daily basis or for several hours, it would be most likely have a hard time breathing, or just sick. If these symptoms occur, contact or bring your bird to an avian vet immediately.
s/he could either be sick or pregnant
if the person is sick, and you are close enough to the person, then yes you can get sick. But if you are sick and you breath on someone, then that person could get sick. If you or the person who you are breathing on are both healthy, then it would be hard to get sick, in fact if someone is going to get sick, then it will be the person who you are breathing on.
yes if the bird is sick
You can get sick from breathing is any kind of feces if you breath it in long enough.
you are sick you have a tempeture you die
No, this may not be a sign of the cat being sick with only the one symptom. If the cat has other symptoms such as labored breathing or panting then a trip to a vet is advised.
*cold*breathing problems*weather can make a dog sick
yes
Nausea can be a symptom of a heart attack.
Yes, Diarrhea is a symptom of a disease or illness
Not a known symptom.
yes, yes you can