A dog requires A LOT of work. I like where you’re going with the foster thing, however I find that dogs and humans create a very special bond and letting them go is hard. If you aren’t willing to put a lot of work into convincing them then, maybe a dog isn’t a great fit. If you really are committed to a dog here are some convincing parent tips:
1) tell them ALL the things you would do for it (feed it, clean it’s cage (area))
2) tell them ways that they would like it too (You can walk it. Haven’t you been wanting a walking companion?)
3) Tell them in a time they seem happy. For me it’s morning because I haven’t gone through the full, busy day, but sometimes people are more open in the evening after dinner.
4) Ask around your birthday or a holiday.
5) avoid asking when a sibling(s) have been asking for something.
6) Don’t ask then for anything else (That will make them feel like your asking for EVERYTHING!)
7) If they say “probably no.” then ask them why and then try to prove a way that there reason seems wrong
8) Do research on ways they might say no so you can have a strong defense against it.
I have 2 links for you:
What pet to get quiz: https://www.allthetests.com/personality-tests/animals/which-pet-should-i-get/quiz30/1346285407/what-pet-is-best-for-me. Take this with your family to find the best pet for you.
These might be helpful tips: https://www.wikihow.com/Persuade-Your-Parents-to-Get-a-Dog
When your family is ALL together ask about fostering a dog. You should also show them pictures of the dog you want and if your chosen adoption website has details about the dog, read aloud those too.
My dog is currently 13 years old and I know all about about dogs. If you need anymore tips I’m happy to answer!