Hi Dave 024
Welcome to the Forum!
Q1. They should be fine living in the same area. Hogs have ranges rather than territories and their ranges overlap. Some hoglets move on to new ranges when they get a bit older but some stay.
Q2. The small hog should have enough time to put on enough weight. They put on weight really quickly when they’re small, but you could help it along by offering some supplementary food (cat/dog/hog food). I realise that’s made more difficult by the presence of the dog, but maybe you could take the dog out on a lead after dark? You don’t want the dog getting injured by the spines either – they can be quite sharp if the hog rolls up. If you don’t feel you can leave food for the hogs, water is really important to them too and easier to cater for – wide but shallow containers – plant saucers are ideal.
Here is a link about pets and hedgeogs which gives some ideas: https://www.hedgehogstreet.org/pets-and-hedgehogs/
Hogs seem to learn fairly quickly if food is put out only between certain times, so you could try that, although this isn’t the best time of year being not long until hibernation. So not long for them to get used to any routine. The larger hog may hibernate earlier than the young one.
Good luck. I hope you manage to reach some sort of compromise.
