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1yr old female jrt started to attack other dog in house
I have two female JRTs. One is 6 years old the other has just turned 1. The little one has just had her first season about 3 weeks ago and over the passed week has started to become very agressive towards my other JRT when she walks passed her. They are fine together when they are out and they sleep together in a crate. Also we went away in our caravan at the weekend and they got along great. But since we have been home it has started again not all the time just a couple of times a day the little one will go for her. Any ideas or help would be much appreciated