1 Preseed maintains this alkalinity while other vaginal lubricants tend to have pH values below 7.0 and as low as 3.5 (very acidic and deadly to sperm.  Osmolality Ã¢â¬â Semen has a specific particle concentration that keeps sperm motile and healthy.
Causes of instantaneous or sudden death. Instantaneous or sudden death may result from dysfunction/abnormalities of the heart and its vessels, noncardiac vessels, pulmonary system, and central nervous system (CNS).
If you are concerned, talk to your vet. He or she can discuss your catâs risk and determine whether diagnostics should be performed. Finally, be aware that although cardiomyopathy is the most common cause of sudden death in cats, it is not the only one. Other possible causes include trauma, exposure to toxins, urinary obstruction, and feline asthma.