Beagle being aggressive
We have 2 Beagles about 4 years old 1 can be aggressive with his brother he bites at his ears and will draw blood this only happens once in awhile he won’t let the other eat and just corners him and growls at him . It seems he will do this and be that way only for a day or 2 and then will be just fine the other dog his brother never does anything to trigger for him to act that way . But any other time they will whine and never want to be apart they even sleep with each other and don’t like being apart . Just to be clear he’s only this way with his brother never has shown aggression or anything at anyone in our family can you please help with ideas I just feel so bad for our other for that gets his ears bit ?