IMO the biggest problems are unregistered breeders and the people who are willing to buy from them. I have dogs and they have always come from a registered breeder, I like to see the mother with the pups and I also like to know who the father is (even better if I can see him too). When I buy a puppy he is going to be a member of my family for the rest of his life, I need to know that the dog comes from a good breeding line, has a good temperament and has been tested for any of the genetic problems associated with the breed. I've no problem with people taking on dogs from rescue centres but with children as regular visitors I need to be confident that they don't have any issues and tbh many of the dogs who come from rescue centres do have issues and need experienced owners and careful rehoming in order to thrive. FWIW registered breeders work within strict rules about how many litters a bitch may have and at what age they can have a first and last litter. All my dogs have come from family type homes where they are well socialised and cared for and I have no problem in paying a decent price for them as they are a lot of work as young pups.
I've also bought horses, all horses have to be passported but again breeding is very important. Breeders sell at different stages but I've always bought rising 5 year olds, generally they have been weaned, spent a year or so with other youngsters, had some basic training on the ground so they are safe to handle, then been sold on to be backed and start their education as a riding horse. You don't get horses like this from rescue centres and hopefully horses that have had a good start to their lives and are well bred never end up in a rescue centre.
I've never paid for a cat, mostly they are the result of people failing to spay or neuter their cats and they are happy to find good homes for the kittens but then again, I've never gone for anything other than a moggy!
don't have a problem with under 16's having free bus travel,BUT
What is your favourite healthy vegetarian meal?


but I have only ever had rescues, even when my children were small. I remember my Mum saying a particular rescue dog we had was 'always very grateful' and she was.