RHD is also known as VHD, RVHD or ‘Rabbit Viral Haemorrhagic Disease’. RHD is caused by a virus, it causes severe symptoms and often death.
A heat/season is the time of a cat’s cycle when they are fertile and can get pregnant.
Mounting and humping is normal for both male and female dogs, and occurs for a number of reasons (not always sexual). Distracting your dog, teaching them appropriate behaviour and neutering can help prevent humping.