If the battery shows less voltage or won't take a charge, it's time to get out the hydrometer. This device checks the proportions of sulfuric acid and water in the electrolyte, which is a precise indication of the level of charge.
Common causes of cat hair loss, or alopecia, can range from allergic reactions to hormone imbalances to an infestation of some pest or another. Although the different causes can be difficult to pinpoint, most are fairly easy to address and remedy.
Hairballs. Probably the number one cause of cat vomiting is hairballs. When your cat grooms and cleans himself, the fur goes through his intestinal tract and generally comes out in the stool. But sometimes cats have tender stomach and you'll hear the hacking cough that's a precursor to them vomiting a hairball.