My two cats Mollie and Millie are not the best of friends. Mollie is very territorial and Millie is the younger of the two and was adopted about five years after Mollie was born.  I’m spending this week at my summer home in Delaware.  Usually, there are no incidents between my cats while I’m here but this time is different. Mollie is being more aggressive than usual toward Millie. She’s growling, running after her, blocking her way and watching her every move. I’m not overly concerned but I do feel bad for my younger cat. I will not scold Mollie, except when she goes to attack Millie. I’m trying to ignore it. I’ve come to terms with the fact that they will never get along. My advice to you if you’re in a similar situation. Make sure that their food and water bowls are kept separate. Set up two separate litter boxes and try to distribute your affection equally. As a general rule, if you have a female cat and then take in another female, there is only a very slim chance that they will become friends. Remember, your pets count.