How do animals know not to breed with their siblings/family members? - Quora
Siblicide - Wikipedia
Alloparenting - Wikipedia
Humans aren't the only ones that help out their adult kids — here's why animals do it too
Most dog breeds are dangerously inbred- Big Think
How do animals recognise their young and do they know they reproduce? | New Scientist
Cat reproduction - 7 facts you probably don't know - RSPCA
Mating With Relatives? New Research Shows It Is Not a Big Deal in Nature
Do Puppies Miss Their Siblings When They're Separated?
Buying Siblings two puppies or rearing two young pups from different litters. Nightmare Don't do it!
Cat Adoption: Bonded Pairs | VCA Animal Hospitals
Why can animals breed with relatives but humans can't? - Quora
Why some animals eat their young | PBS NewsHour
Do Sibling Cats Mate Together - And What to Do - Cat-World
Animals 'rarely avoid' mating with relatives, new study says | CBC Radio
Animals 'rarely avoid' mating with relatives, new study says | CBC Radio
Why Do Animals Sometimes Kill Their Babies?
Adding an Additional Cat | International Cat Care
Pet Subjects: Do animals know it's wrong to breed with their siblings?
