There are a lot of different way scammers in Animal Jam use to scam. I will post some so you can avoid most of them.
1. Best Decline Scam
A Jammers in some random area in Jamaa chants: "Best decline gets my rare!" This is too much of an obvious scam, because they probably have a Necklace on their trade list and want you to trade unfairly for them. Some people use scamming teams which they say: "Oh my goodness! He declined my Scary Bat Wings!" which is a team, so you would think: He/she declined Scary Bat Wings! I should do better! Then you do something good, and they accept and leave.
2. Best Gift Gets My Rares Scam
This is kinda like the previous one, when they get a good gift, they will just leave with your rare. This scam is usually avoided.
3. My Parents Are Watching Scam
Some sent a Jam-A-Gram that said: PLEASE GIVE ME A RARE BOW MY DAD IS WATCHING. I replied: SO?! DOES YOU DAD PLAY THIS GAME?! She answered: IF I DON'T GET A RARE BOW, MY DAD WILL GROUND ME! I said: WHY WOULD HE CARE? She continued: BECAUSE I GOT SCAMMED AND I NEED IT BACK. Now, this is an obvious scam because whose dad even plays this game? Also, this game has nothing to do with the real world, it's not like if you have a Rare Bow and Arrows, you get $100! It doesn't even matter, and their dad probably isn't watching them.
4. The I Got Scammed Scam
One Jammer laying in anywhere in Jamaa says: I got scammed, please send items to me! It's pretty obvious she might be pretending to be poor and wants you to feel sorry for her. She might actually got scammed, but she can't be going around in Jamaa demanding rares from everyone. If you lose a rare, scam one yourself, but don't ask people to give you one, as Jammers worked hard for their rares.
5. The Flash Trade Scam
A Jammer wants you to flash them a rare item for a bad item. (By the way, flashing is when you do an overtrade, and quickly cancel before they accept). They might say: Flash me for 1 second, and if you do, I'll give you my rare. Since now the buttons don't show after 5 seconds, people think: Of course I'll do it! But these Jammers download mods to help them accept the trade super quickly. Don't fall for any of these scams! The phrase: Flash me! has been banned, but that didn't stop the Jammers, they made fl4sh me, floosh me!, fish me!, etc.
6. The Accept My Trade and Get My Rares Scam
This scam is usually avoided, but is when Jammers say: Accept my trade and get my rare! They probably would offer something like a Necklace for your rare or just a really unfair trade. I have been scammed like this by snowflake10704. This is obviously a scam, because who would give out something rare just because you accepted a trade?
These are the most well-known scamming tactics, there are many others scammers use.