Hello I am Dr. Joey. Thanks for trusting me to help you and your pet today. I am a licensed veterinarian with over 15 years of experience. I look forward to working with you.
First we have to be certain Charlie is truly straining to defecate and is not straining to urinate. If you see liquidy brown stool coming out then this is to pass stool, but if you see clear fluid, then he may be straining to urinate. Straining to urinate in a male cat of any age is a medical emergency. What is reassuring is that he may be able to pass some urine, but in a male cat he is at high risk for urethral obstruction which would then make him unable to urinate. Therefore, if he is continuously straining still, possibly even vocalizing while straining, I must recommend you take him in to be seen on emergency as soon as possible. If his urinary system becomes obstructed due to swelling (or a lodged stone or other debris lodged) in his urethra then he could die from the secondary kidney failure; this is one of those few true medical emergencies in cats.
On the other hand if you feel he is passing urine no problem and this is truly due to diarrhea (loose stool) then I can give you some hints to try at home but this is probably something that would best respond to prescription medication as your vet can prescribe. So, if there is any blood in the stool or he has been straining for longer than 24 hours I, again, must recommend your take him in to be seen.
If you feel confident this is due to diarrhea (loose stool) and he is doing great otherwise (eating well, normal attitude) and he was my patient but you could not take him in to be seen then I might recommend you try:
1) Bismuth sulfate suspension (Peptobismol liquid): Give 1/2 (one-half) ml by mouth every 8 hours for diarrhea. This medication must be given 1 hour after any other medication as it will coat the system and can potentially prevent absorption of other medications
2) If he is not eating well you could try giving him famotidine 10mg at one-fourth tab once daily to aid in treating sour stomach. There are no bad side effects of this and you can find it at any pharmacy for people.
3) Start a good probiotic supplement. You can get one from your vet (such as Proviable or Fortiflora) or use one you trust as made for people or you could use plain yogurt at one-half teaspoonful once daily (although this is often not as good as the prepared probiotic for pets.
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Thanks for your reply.
I have taken Charlie to the vets today.
They have placed an enema in him and we are hoping that this helps him to defecate properly .
I am assessing him until tomorrow morning , and i will contact the vet again if there is no change in his condition.
Ufortunately on further tests , the vet found a tumor on Charlie's bowel which was causing a blockage.
He had more on his stomach , we decided to have him put to sleep as we did not want him to suffer any longer.