Why do flat-faced cats have tears? It is best for the owner to pay attention in advance. A flat-faced cat may cry because of emotional stimulation, such as being hurt or losing something important, or being affected by depression, resulting in tears...
Why do flat-faced cats have tears? It is best for the owner to pay attention in advance. A flat-faced cat may cry because of emotional stimulation, such as being hurt or losing something important, or being affected by depression, resulting in tears.
Speaking of tears, many people think it is caused by shedding too many tears, so let's start with tears. Tears or tears are liquid secreted from the tear glands outside the eye. If a cat continues to produce tears under the action of some factors, tears will fill the corners of the eyes and then pass through the nasal lacrimal duct and be discharged into the nasal cavity.
If the tears are produced too much, or the nasolac duct is blocked, tears will overflow from the inner corner of the eye, forming what is medically called "tear overflow".
Why do colorless and transparent tears form red tears? This involves a substance called "porphyrin". Where does porphyrin come from?
It turns out that when the red blood cells in the body break, an iron-containing waste will be produced. In addition to being excreted from the stool (usually animals are excreted from the stool), this metabolites in cats and dogs can also be excreted from tears, saliva and urine. This is "porphyrin".
The porphyrin in the cat's body is discharged through tears. If there are too many tears, the porphyrin will be mixed with tears and attached to the hair around the lower eye, forming red or brown tears.
This can also explain that some cats and dogs shed red tears because they eat more livers, which are rich in iron.
In other words, porphyrins are the source of the color of the tear marks, and cat tear marks are generated by the interaction between tears and porphyrins.
