Why is my senior cat drooling thick, sticky, foul-smelling saliva?
Typically excess salivation is either caused by nausea or pain (oral or abdominal), although this is not an all inclusive list. There can still be oral disease present, especially if these missing teeth were not removed but fell out. Cats can get resorptive lesions of their teeth which can be really painful and the changes can be hard for owners to detect. They can also get lesions in their mouth (stomatitis, a mass, ulcers, etc.) that an owner may not see. Additionally diseases of other body systems may cause drooling (kidneys, gi, etc ). I would recommend your kitty seeing a vet for a thourough oral exam and blood work to start. A good oral exam will likely require sedation and perhaps dental xrays. Additional testing may be recommended based on the case. I hope this helps and thank you for using Petco Pet Education Center, formerly Petcoach!
Updated on September 23rd, 2025