Humans sometimes have trouble, so there is a good chance dogs do too.
Dreams reflect what one has been thinking of, along with emotions, memories and experiences. If one has been discussing "soulmates" with the friend, it is not surprising to dream about soulmates. However, dreams do not predict the future, and part of growing up is learning to tell the difference between dreams and reality.
Dogs have dreams too, and dogs cant tell the difference between dream and reality so, if they had a distressing dream, that would get them all ancy, and on top of that, they would wake up extremely confused.
A person with an eidetic memory mentally reproduces images or scenes in his mind so vividly, that his mind doesn't notice the difference between it and reality, whereas people with a photographic memory can tell the difference.
Majorly. Imagine not being able to grasp reality, and living in a constant dream/nightmare state. You can't tell whats real and not, and normally you start to live in your dream state and forsake reality.
You will go really crazy most of the time but you sometimes won't be able to tell the difference between reality and fantasy in most cases this is a scary thing to have :(
The dream suggests that at some level the dreamer is having difficulty accepting the reality of the person's death. The effect of the dream is to tell one's own self that the person is dead. This is a healthy, natural dream, and represents the early stages of healing grief.
Only experience can tell you that. A source whose information checks out when compared to reality (e.g. other sources) is usually reliable, while a source whose data turns out not to match reality would be considered unreliable.
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The totem is a device that Cobb spins in order to tell whether he's in a dream or not. If it spins perpetually, he's in someone's dream. If it spins, but then falls and stops, it's reality.
you can tell the difference between right and wrong from the little voice inside your head
Vending machines have laser scanners that can tell the difference between the bills.