Inappropriate urination and/or defecation:

• Please help me solve my litterbox woes!
• My cat is peeing in the guest room, my husband is peeved, and my mother-in-law is coming for Christmas. Help!
• My cat is urinating where he shouldn't. He's gotten a clean bill of health, and we can't figure out why he's doing this. Help!
• What's with all the peeing? Help!
• Help! My cat is peeing all over the place!
• My human is mad at me because the new cat won't let me use the litterbox.
• I peed on my human's bed and now I'm in the doghouse. Help!
• Why is my cat pooping outside the litterbox?
• My senior cat is pooping outside the litterbox. Help!
• What can I do about my roommate's cats and their bad bathroom behavior?

Other litterbox-related problems

• Help! My cat needs butt cleaning lessons!
• My cats are making me crazy with their litterbox antics!
• Clumping cat litter questions and feline litterbox obsession
• How can we train an outdoor cat to use the litterbox?
• How can I keep my cats from using my garden as a litterbox?

Food issues

• I've got one food snatcher and one starving cat. Help!
• Can I teach my food "gulper" to become a "nibbler"?
• Why does my cat dig and scratch around his food dish?
• My cat is a finicky food fiend. Help!
• My fat kitty brother's on a diet, and he's pooping mad!

Aggression

• Will my cats' wrestling matches lead to serious injury?
• Exactly why does the fur fly when cats fight?
• Why has one of my cats started attacking the other?
• Why has my cat suddenly started attacking my husband?
• My cat hates everybody but me. Help!
• Why has my mother's sweet, shy kitty boy turned into a street fighter?
• My kitten acts more like a wildcat. Help!
• My cat's become a Jekyll and Hyde!
• Why does my cat attack me when I get out of the shower?
• Help! I think I need to find a new home for one of my cats.

Sexual behavior

• Why is my male cat constantly having erections?
• I'd like to breed my Siamese cat, but I need some advice
• My fixed male cat kneads and sprays. What's up with that?
• Spaying: How soon after kitten-birth? (And how often do cats go into heat?)
• How can you tell when a female cat is going into heat?
• Help! I can't stop chasing girl kitties and spraying on things!
• The birds and the bees, kitty style

Body language

• Help! I think my cat is trying to take over the world!
• Cat body language I: Aggression and defensiveness
• Cat body language II: Tails, ears and whiskers

Meowing and purring

• Does a cat's environment affect its purring?
• Why is my cat's meow more like a squeak?
• Why can't my human hear me purr?
• How do cats purr?

Abused and/or traumatized cats

• Why does my cat freak out whenever I put flea treatment on him?
• My cat's traumatic past is causing behavior problems. How can I help him?
• One of my kittens seems to be scared of me, and it's breaking my heart. What can I do to help him be less fearful?
• How to help animals traumatized by disasters
• How can I get my cat to trust me again?
• Some low-cost ways to help a skittish cat come out of her shell

Grief and loss

• Why has my cat's behavior changed, and what can I do to help him?
• How can I help my grieving cat?

Destructive behavior

• Why do I like to chew on straw, and how can I stop?
• My kitten acts more like a wildcat. Help!
• How can my mama help me kick my carpet-scratching habit?
• My cat loves water, but not just for drinking!
• Introducing Thomas and helping a wire chewer kick the habit
• A strange splashing situation has this cat worried

Licking, sucking, grooming and kneading

• What's up with my Siamese cat's blanket-sucking?
• Help! I can't stop scratching and licking myself!
• Is my cat kissing me or grooming me? And is it safe?
• My fixed male cat kneads and sprays. What's up with that?
• Is it okay that my cat likes to lick and knead me so much?
• One of my cats likes to nurse on a blanket. Is there some way I can break him of this habit?
• Some answers about kneading, stomping, and other odd behavior
• Why is my cat constantly licking and kneading me, and what can I do about it?
• Why has my cat suddenly become so "kneady"?
• Why does my cat knead?
• What does it mean when a cat licks me?
• What can I do about my cat's compulsive grooming?
• I'm a kitten that likes to suck my own nipple. Am I weird?

Intrusive behavior

• How can my human keep me from wrapping myself up in her hair?
• My cat's constant caterwauling is driving my crazy. Help!
• Why is my cat constantly flopping down in front of my mother?
• How can I keep my cat from waking me up at the crack of dawn?
• How can I keep my cat from waking me up all night?
• How can I get my cat to stop yowling all night?

Other peculiar behavior

• How can I get my cat to quit his death-defying tricks?
• Why does my cat freak out whenever I put flea treatment on him?
• Help! I think my cat ate my engagement ring!
• Why does my sister's cat have a mohawk?
• Why does my cat love to sit on top of the TV?
• Why does my cat have the hots for my husband's dirty clothes?
• Please help me understand some of my cats' funny habits
• Am I weird because I like to play Fetch?