I have 2 piggies. and they are in different cages. i was thinking of getting 2 bigger cages so they can connect into 1. (fyi my 2 piggies hate eachother and the second i put them together they start fighting) But if they never make out will they become sad or lonely and pass away early? i put them both next to eachother. they sometimes try to fight and bite through the cage but still they dont mind it too much. just wondering if they will become sad. so then i can try to get them to make out or not.