Dominance i've got a problem!

[arcangel]

i just got a another pig because my friend parents had one but they are moving to a no pets apartment. So i now have a 5th piggie and ive introduced the new pig with my pigs in a neatraul (sry about my spelling) and i it looked perfactly fine but the problem once ive fully cleaned the cage and put all 5 pigs in my leader pig just straight up after exploring attacked my new piggie midnight who is a 2 1/2 year old and now they both just teeth chatter up a storm and im worried because my leader pig moo pulled a lil bit of hair out. Do i move midnight out?

 

[CanadianComforts]

How big is your cage? Did you wait 2-3 weeks to make sure the new pig is healthy? What sex are they (male or female)?

 

[MrWhistles]

Some no pet apartments are more geared towards no dogs or cats. They usually allow aquariums and small animals like guinea pigs.

I also question if they are all the same sex. You need to keeps boys n girls separate from each other.
What are their ages? How did you introduce? How long did you let the introduction go?

 

[foggycreekcavy]

How large is the cage? If it's too small for 5 pigs there will definitely be trouble.

Some pigs just don't like newcomers. Sometimes a new pig can upset the balance that the others have, and they will all get upset and try to assert their dominance again.

 

[arcangel]

all my pig's are female and the new one is too i check to make sure (she's a girl) my cage is a L-shaped cage with 10.5 ft long and 5 ft wide on side the the hook of the L is 8 ft long and again 5 ft wide its a huge cage.
My pigs age

Moo moo 2 years old
Lunaria 2 years old
Fang 1 1/2 years old
Va-niel 1 1/2 years old
(new pig) middy is 2 1/2 years old is my friend said

My friend watch over her for a week at his house before she came to my house to make sure she wasnt sick (which see not) however i need to set her up with a new vet because his vet was a benefield vet but she seems fine eating cherping and begging all ready for food. Next I put them in Area neither of them have been for 2 hours with me watching to see how they do and it seemed fine but once in the cage it changed. ( like ive stated)