Lethargic cat with dry mouth and loss of appetite
These are some pertinent details: Cat 8 years old, not eating for 2 days now. Sleeping more than usual and not usual playful self. Dry mouth
I need a reply right away? We’re terrified for our cat.
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Your cat seems to be dehydrated hence the dry mouth. In this instance you do not mention that the cause might be diarrhea.
But dehydration is caused by a loss of both water and electrolytes (minerals such as sodium, chloride and potassium).
This loss is due to inadequate fluid intake. This in turn is probably due to not eating or drinking. Cat food is 80% water.
Fever increases the loss of water. Your cat is lethargic (sleepy) indicating that (s)he may have a temperature.
The gums are tacky and dry to the touch. The saliva is thick.
If your cat is “noticeably dehydrated” (s)he should receive “prompt veterinarian attention”.
The vet will ascertain the cause and treat that plus threat the dehydration. An electrolyte solution can be given by bottle or syringe to the cheek pouch. A balanced electrolyte solution for children acceptable.
In the US, Ringer’s lactate with 5 percent Dextrose in water and solution of Pedialyte is suitable for a cat.
Cat Owner’s Home Veterinary Handbook page 5.