Is it true that dogs can smell cancer cells from a person’s urine and they can also alert a person when they are about to have a seizure? ?

Question

Update:

I can understand if dogs can smell cancer cells in the urine of a person. But how can they know if a person with epilepsy is about to have a seizure?! 

Answer 1

Yes and Yes.  Dogs are being trained and used to detect cancers and there have been many seizure alert dogs trained and working as service animals. 

Answer 2

Yes, it is true & they can sniff out other diseases as well.  They can even smell the Covid 19 virus.  You just can get past a scent dogs nose.

Answer 3

Some dogs can be trained to detect certain types of cancer, yes, and some dogs can detect when someone is about to have a seizure, also based on a change in someone's smell due to biochemical changes that happen prior to a seizure. All dogs cannot do these things. They must have a natural aptitude and also be specially trained. 

Answer 4

 yes.................

Answer 5

No one completely understands how/what dogs know.  It is NOT 100% true that dogs can smell cancer cells in the urine of a person.

Not all cancer patients have "cancer cells" in their urine.  If this were true, life would be easier.