dog problem

[1warewolfhntr]

got a pup at 16 weeks and has been in same pen 25x50 with 4 dogs for 2 years. she came in heat about 2 weeks ago and has now become (very)agressive to 1 of the dogs and has penned her in corner( several times) and just used her as chew toy have had to grab her collar and whip her just to get her to let go.dont know what the problem is .have hear that sometimes dogs will pick on a sick dog but she isnt . dogs are chained when feed .three dog boxes to sleep in. all get plenty of exercise.and are well cared for and played with daily by kids. none of them have ever showed any aggression up to this point. IF YOU HAVE ANY IDEAS TO FIX THIS LET ME KNOW !! done with seperate pens (i know what needs to be done if i cant fix soon) thanks

[fox hunter]

you need to seperate bitchs when they are in heat

[1warewolfhntr]

thank you i didnt know that.never had this problem with my other dogs. but will try that and see what happens