Hi everyone I wish my first post in a long time wasnt this post. My family and I just lost one of our two chinchillas earlier this week. Her death was sudden and unexpected. We had her for 9 years and my wife is heartbroken. My question is about our other male chinchilla. After the death of his friend he has become aggressive. He's making all the noises and gestures of a mad defensive chinchilla. Now this is not like him. He is usually happy, playful and loves attention. Is this normal? He and our female were together for about 8 years and had a great relationship. They never mated because honestly we know nothing about chinchilla birth and didn't want to risk loosing our chinchilla.