I had 2 cats. brothers from the same litter. there had been 4 in the litter and they were the two that survived. they were VERY close. one fell suddenly i’ll and died within two days. the remaining cat is devastated. it’s having human sized emotions at the loss of his brother. he doesn’t know what to do with himself. i am also so sad. not only for the loss of my other cat, but to see the other cats sadness. it’s almost like loosing my two happy fur balls. i have spent the past two days with him and will spend the weekend with him, but i feel so bad leaving him alone. he’s definitely a social cat. he is not a loner. i don’t know how to pull through this with him. he is about 9 months old .