A Can of Worms?

Judges are set to rule whether tenants in English privately-rented accommodation have the 'right' to keep a pet(s). England has around 11 million tenants and their landlords currently can reject pets. The law around 'no fault' eviction is, however, due to change and the pet issue is being considered. It seems a potential 'can of worms'. What's a pet and what's reasonable? It's now more usual to talk about 'companion animals' rather than pets. Cats and dogs are typical companion animals but what about snakes, birds, aquaria fish, rats and stick insects etc., etc.? (https://www.theguardian.com/society/2023/oct/23/judges-to-rule-on-whether-tenants-in-england-have-right-to-keep-a-pet). Having companion animals can be beneficial to folk. It can make them feel less lonely and can even speed recovery from illness. What, however, if there are other people in the building with a fear of certain species or a cat allergy? What, if the animals disturb with the sounds they produce (a cockerel, anyone?) or generate a smell nuisance (a skunk)? Animals can damage properties and gardens. How many pets is reasonable? Some dogs are suited in certain properties, whereas others need much more space. Even owners of their own properties don't have carte blanc to keep any animal that appeals to them. It seems very unlikely that tenants will be granted a 'right' to keep any pets that they want. There seems to be wide scope for potential conflicts between landlords and their tenants. It looks like more business for the legal profession!