Source: https://forgettingforward.com/2017/04/24/is-it-i-lord-4-keys-to-grace-during-betrayal/ This picture shows that someone during a trade or someone you trust to do a deal with can turn out to stab you in the back. This is very common between trades on websites and from places that don't have good reputations. Most people trade or do business with someone that they are well associated with. People don't usually do business with people they don't fully trust in fear of being betrayed by being scammed. This does not always mean you will be scammed you could be scammed by someone you trust just as much as someone you don't trust. This also the same for how someone you trust doesn't betray you and someone you don't trust could also not betray you.
Source: https://www.psychologytoday.com/us/blog/anger-in-the-age-entitlement/201401/trust-and-betrayal This article relates a lot of ways someone can be betrayed and the effects that it will leave on someone. Someone like a family member which is close and supposed to be loving could bully or abuse another family member. This makes the abused/bullied family member have trust issues or other mental issues like insomnia depression and other symptoms. This breaks the family because they are unable to trust that other family member because they were betrayed by that family member. Since family members are supposed to love one another this act of betrayal is looked and acted upon very harshly. This also acting like the fact of the animals on Animal Farm are like a family but then Napoleon betrays the other animals and abuses them by making them do the work and they don´t get much food out of it.
Source: https://www.nytimes.com/2007/05/28/opinion/28krugman.html Mr. Krugman talks about betrayal and how the president at the time Bush was using false information to keep getting funded for war. Also the whole 9/11 thing and how he blamed it on people that had nothing to do with it just so he could go to war and fight someone. This is a true sign of betrayal because its a leader that people are supposed to look up to. The leader of a country betrays his own nation and other nations by framing and falsely accusing people. This a higher act of betrayal on a humane level which shows anyone can betray anyone. Just like in Animal Farm no one saw it coming but Napoleon betrayed his own kin and all the others.
Source: https://www.youtube.com/watch?v=S9tKwSboJeg This older song is a great example of betrayal although it is about lovers it still sets the stage of how when you betray someone its like a shot to the heart if they were one of your closer friends. In the story napoleon does not have a gun to shoot snowball but he has dogs to chase him and try to kill him. This song relates to the theme because it states that a girl had betrayed a man and is related to a shot to the heart, these partners were probably closer when this had happened thus why it hurts so bad like a shot to the heart to the man.
Source: https://www.potentash.com/2012/12/07/betrayal-city/poem-betrayal/ Betrayal can cause lots of pain sorrow and even death to the person that is betrayed. In the case of napoleon betraying snowball and even tried to kill snowball in the process and even ruined snowballs life because all the farm animals hated him. This was all because napoleon betrayed him and started rumors and lies about him just so napoleon could become the higher power.
Source: https://www.independent.co.uk/topic/betrayal The news reports stories of betrayal between loved ones like a partner in a relationship goes behind the others back and cheats. Then the news acts like its not a big deal and they say is it really cheating which is yes anything even lusting over another is a form of cheating. In animal farm there are not any obvious love relationships but it works the same as friends because the bond between them is strong maybe even stronger than one in a relationship.
The betrayal of Jesus was one of the first huge betrayals known to man. Even though Jesus knew that it was going to happen it was still one of his closer friends one of the twelve that betrayed him. This shows that its been a thing for quite a long time. In the story this sort of same betrayal happens to Snowball when Napoleon convinces the others to betray Snowball only to have more power.
Source: Google Image Result for http://1.bp.blogspot.com/-ZAR-w7jl4Rc/UUcAqnZLuhI/AAAAAAAAAE0/j-KH This shows betrayal to the society as a whole and that in reality people are not all equal or as free as others. This betrays the fact of the nation which is that everyone is free and equal. This also being how the pigs made themselves the center of society and that they were more equal betraying the rest of the animals. This showing that anyone in society can betray you and that no one is safe. Betrayal happens like everyday some dumb reasons and some reasons that are on a much higher level