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Ask the Veterinarian/Cat Suddenly very Agressive and Drooling


Momma cat suddenly very aggressive towards her kitten that is 13 weeks old. Started about an hour ago. We applied tick/flea drops on her about 5 hours ago. She is hissing and pouncing on her kitten and hissing at myself as well.

Usually this is an adverse reaction to them. They can even be burning her skin.
The suggestion is to bathe her completely from head to toe and use Dawn dish washing liquid to do so. This will remove the chemicals.

Make sure you rinse her completely- rinse her at least three times to make sure all of the soap is off of her.

Dry her off then do not use anymore flea and tick medicine on her unless it comes from the vets office. Even that can cause a reaction. What kind of tick and flea drops are they?

Never, ever, under any circumstances, use dog flea and tick drops on a cat. It can kill them.

If she continues to act in this manner, take her into the vets right away.

Hi Bertha,
There has been some serious problems and many drug-related deaths to using Hartz flea and tick drops on cats. EVEN when using the correct ones. Most of the deaths have been from owners accidentally using the dog drops on cats.

I am relieved that she is better now. Thank goodness! Thanks for letting me know.

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Jana Connell RVT, CVT


PLEASE READ BEFORE SUBMITTING TO ME: I am NOT a vet and do NOT diagnose diseases. That is only for a licensed Veterinarian to do. I will give you suggestions and steer you toward calling your vet for help. You can call the vet's office and talk to the technician there or the vet at times. Don't be afraid to call them! If you have a serious issue with your pet please post it to one of the veterinarians in here- I will tell you the same thing in my answer. IF your pet is injured or in an emergency situation, CALL YOUR VET- Do not wait and post in here. Just call the vet's office and get them in to see the vet right away. Critical treatment time is lost if you seek answers here when you should have your precious pet at the vets!! Don't sit at home waiting for an answer when your pet is critically ill or injured!! I can answer most questions about small animal and wildlife care as well as small animal nutrition. I can also answer questions about all phases of dental care for small animals. I DO NOT answer questions about birds (unless it is wildlife or songbirds) or HAMSTERS/GERBILS/CHINS/GUINEA PIGS/REPTILES/FROGS/RABBITS/PET BIRDS OF ANY KIND so please submit these questions to the appropriate sections. I, as well as other experts in here, do NOT do homework questions- that is for YOU to do! Please respect these rules for all of us. Thanks!


I have over 42 years experience in the field of veterinary medicine. I specialized in small animals and did wildlife rehab for over 25 years, mostly raptors, squirrels and opossums. I am a Small Animal Nutritional Consultant with 6 certificates from Hills Pet Foods, CNM and Purina. I also specialized in Small Animal Dentistry which is a field I truly love. I also Teach Veterinary Technology to working technicians who are studying to take their California Tests to become Licensed Technicians. They have to take both the VTNE (Veterinary Technician National Exam) and the California boards.

Audubon,World Wildlife Federation, American Society of Veterinary Dental Technicians.


Licensed with California and Oregon, RVT and CVT. Certified Veterinary Dental Technician Have over 1500 logged hours of Continuing Education Credits(that means I keep up to date!).

Awards and Honors
Nominated for Expert of the Month for the last 5 years.

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