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Dear Dr.Connell,

 My male cat was recently diagnosed with crystals. His vet told me
 to me to put him on a special diet of Hill's c/d. While the food
 shipping I fed him Hills and Iams wet food and it seemed that he
 felt better. I was able to go to his litter box without a   problem.
 As soon as his food arrived I tried to feed it to him but he
 doesnt like at all. I can say he probably ate less than a 1/2 cup
 of it. Is it ok if I mix a little bit of the c/d with his regular
 wet food or with regular dry food in order for him to eat it ?
 Thank you in advance.

Please understand that I am NOT a doctor, but a Registered Veterinary Technician.
You can feed him a small amount of the wet food but keep the C/D out for him.
One half cup of C/D is ALL that you are supposed to feed a cat anyway, so that is pretty good that he ate it.

Now don't confuse him not liking it with being satisfied after eating it. When cats eat C/D it is so nutrient dense that it meets their energy needs with less food. They don't eat as much because they don't need as much of it.

When pets eat cheaper, less nutritious foods they need to eat more of it to get their energy needs met. By energy needs I mean just the energy to sustain life even.

So give him 1/2 daily and a little wet but slowly get him off the wet unless you use C/D wet. I used to use the wet food and dry when my cat had crystal years ago and he did fine on both.

But the dry was easier for me so I kept him on that. He lived to be 19.

And you should always mix foods for 7 days anyway to get them used to the new food slowly. You never want to just change foods abruptly as it can cause stomach upsets.

But keep him on the C/D for life because it's much cheaper and safer then him getting plugged up with crystals and having to be hospitalized and catheterized for a plugged up urethra.  

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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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