My husband and I both work full time and our kitty is at home all day by herself. Thankfully, she is fairly well behaved, but I agree that the solution is probably to get a second kitty. Get another soon, so that they are close to the same age.

Maxx she became rather agressive while playing. We used to put her tail in her mouth so she would bite her tail, rather than our hand. She learned very quickly that she was biting too hard! This may not be the correct approach for all cats, but it worked for us.

Good Luck!