Are Devons difficult to breed? We have had 2 premature births from Lindy and now another from Lily. Both had litters 6 days early although 3 out of 4 of Lindy's last litter survived even though one was only 51 grams at birth. So far only 2 of Lily's 6 kittens have survived and they are now 3 days old. one weighs 69g and the other 71g. Lulu is expecting her first kittens on 7th August so we are hoping this time it will all go well!