Dr. Tajunnisa M
Hi Tamanna. The main reasons are male dominance, possessiveness towards resources or territory and fear from threat. 1. Get the younger one neutered as early as possible. 2. Training is important. 3. Intervene as the aggression starts but don’t punish. 4. Swap their beds so that the younger one gets used to the smell of older one. 4. Seeing a behaviourist is the best option.