Ok here the the list of the most used scam lines that i have seen so far...

1. "It's my birthday! Send me presents!"

This phrase is often used in Jamaa Township, Coral Canyons, or any other busy place. Even if this statement is true or not, do not send items to this person. If you are a really nice person, you may want to send something little, but don't send rares. Of course, if you know the person, you may send rares and items ;)

2. "I decline all trades, try me"

Sometimes a person may want to trick you into trading rares for non rares. They may often say this statement just to get you to trade them items. They will quickly accept the trade. DONT TRADE THEM. Once again if you know this person well enough to know that they will not accept the trade, you may do this. 

3. "Whoever sends me the best gift wins my________" 
The people who say this often won't give what they say they will. Never send your items to this person! 

4. "I'm poor. Send me items!"

Often times, jammers will use this phrase to get people to send them items. If they are a member, they probably can afford anything in the store. If it's a non member, still the same thing. Sorry, you can't trust them...

5. "I was scammed, please send me the item I lost"

True or not, don't send the item they wish for to them. They might lie, just to get a duplicate item. Again, if you know the person in real life, you may want to send them that item if you wish. 

6. "If you send me ________ I'll send you my ________"
DO NOT SEND THAT PERSON YOUR ITEMS. Whatever you do DON'T send that person your items! It's almost all the time a lie. 

7. "If you send me a(n)_______ I'll tell you a free membership code and/or a gem code"
Don't send the items to this person AT ALL. The only gem codes that are out are posted by Animal Jam's "The Daily Explorer". Membership codes can only be used once, most likely it has already been used. DON'T fall for this scam

8. "Send me items to make me look funny! LOL!"

People will say this to get people to send them items so they can put them on and make them look "silly". Don't send them an item, they might not even put on your item! They might just run away with your "funny" item!

9."Send me a rare and I'll show you an awesome glitch!"

People say this to get your rares. They don't have the glitch, and they are not going to show you a glitch. Don't send the item!

10.
"Hello, I'm from Animal Jam. I wanted to let you know that your _______ will be updated soon. I need too borrow your ______ so AJHQ can update it. Please send the item, thank you!"

DON'T SEND YOUR ITEM. Just go on a different area or log off. That person is NOT from animal  jam. They might have a username like "Squish" and not "Squish3921" so it might look believable. Don't believe the username. Plus why would AJHQ go into their game and ask someone to borrow the item? They can update without "borrowing" your item.

iamcool06 sent in another scam-

"My dad works for Animal Jam so if you report me my dad will ban you!"
It is really unlikely that his/her dad is working for Animal Jam. Don't believe them. Log off and take a break :) 

Abbyujam sent in another scam-

"Can I try that ______ on I want to see how it looks on me"
NEVER and i mean NEVER send them the item. Just log off or go to a different land around Jamaa. The person just wants to steal your item.