Cat that is aggressive toward other cat?

I also have 2 cats. one is a 1 year old boy, and one is a 2 month old gils. she does the same thing. she bolts around and starts to attak my older cat.(ourse, he always wins and i have to break them up.) i thinks it because since she isnt sprayed, her hormones are acting up. animals are more alike to humans than you think. im sure she'll calm down when you get her fixed. if she doesnt then try to take her on a walk. o to petsmart and bye a leash and collar. dont worry, there should be some in the cat section. let her explore outside and let her run, nut if she isnt used to the outdoors, shes more likely to run away since she has to explore so much. go on and play with her with some toys at home. dont go so far you'll not be able to see the house. hope this helped. =)