Dogs in kennels growling at each other
My daughter & I got our Labradors from the same litter, one male and one female. They are now 5 years old and have been kept together during the week (at the male dogs home) while we work, then the female goes home with my daughter. Since we got them, they have been kenneled during the day, in their own kennels since they were about 6 months old. The kennels are kept in the same room. In the last year 2 years the dogs have been left out of the kennels on some days and kept kenneled on others, while we work. In about the last year, as soon as I put the dogs in the kennels in the morning, and give them their Kongs with treats, the female starts to growl and then the male growls back and then they snarl, bark, and look toward one another like they are fighting. This goes on for about 10-30 minutes, then they are quiet the rest of the day (as I have observed this on days I have stayed home). I have tried reprimanding them, squirting with water, playing music, covering the kennels so they can't see one another, and nothing changes this behavior. I have always given them a Kong with treats inside when I put them in their kennels and wonder if this is a food aggression, as I used to feed them in the same area and the last few months have separated their food bowls as only one would eat at a time and their were some little growls, but never any further aggression. I have withheld the Kongs for a few days when they were kenneled, but the growling and snarling still goes on. I am now afraid to leave them out during the day for fear they will fight. Can anyone offer any help to correct this behavior and feel comfortable that the dogs would not fight over other things when I am not around?