Experianced dog breeder here. But, only dogs. Breeding practices have a lot in common no matter the species.
1. Inbreeding can actually be a positive thing its one way of keeping bloodlines pure from gentic defects, but as in dogs the reccomendation is for one incident of inbreeding to occur between mother and son or father and daughter every six generations. So its not that often
2. Breeders should have the best interest of the species and their pair at heart.
3. Limit the breeding constant breeding is to hard on anything let alone a 5 ounce sugar glider
4. Keep track of where your babies go. Contracts requiring them to inform you of a move. The babies can never be resold only to returned to you as the original breeder. This can be hard to follow through with. I f you are serious breeder heres what I reccomend, get an attorney you can just pay yearly adn not by case. Most attorneys have PIs that work for them. Once a year we do a location check on all of our babies to make sure they are at the residence and they have maintained ownership. A few will break contract, sue them. I did.
5. Make gift packs to go with your babies, packets on their care, lists of phone numbers and websites that may be of importance. Most importantly a phone number they can reach you 24/7. Example i have a cell phone for that purpose only. Its like our household red phone
6. Go with your gut instinct
7. Trust the animal they can tell more about a person than we ever could. Example if my puppy shys from you or is nervous or refuses contact you do not buy. If my female acts like something is wrong you leave the premises immediantly or she will escort you out
8. Be truthful and straight forward if you want to ask a question but it seems out of line but it purtains to the animals well being or pential new home ask anyway. I have even required drug tests and backround checks, if I get a bad vibe. It paid off in one incident the man was convicted of animal cruelty.
9. Never meet someone and let them take your pet in the same day as odd things they said or did might pop in your head after they leave
10. If you have children ask what they thought of the people (not if they want them to adopt your baby) Children often see and hear things we don't
11. Vet referances, if they have no pets to have a vet referance they must provide five non relative referrances they have known for at least 5 years no exceptions
This might seem quite harsh and strict but all my pups are sold before they are 5 weeks old. I can rest easy at night knowing I am doing all I can to ensure their safety happiness and health.