The ASPCA also specifies âspecies suitable to be companion animals include dogs, cats, horses, rabbits, ferrets, birds, guinea pigs and select other small mammals, small reptiles and fish. However, many other governmental agencies, associations and interest groups insist that horses are livestock.
What Is Zinc PCA. Zinc PCA is also a trace element where the PCA stands for Pyrrolidone carboxylic acid. It has similar functions in general so in some cases it can be used in situations where Zinc cannot because of the different structure.
Elevated PSA (Prostate-Specific Antigen) Level. Prostate-specific antigen (PSA) is a protein produced by the prostate gland. Blood levels of PSA can be elevated in men with prostate cancer. For this reason, measurement of PSA in the blood has been used as a screening test for prostate cancer.levated PSA (Prostate-Specific Antigen) Level. Prostate-specific antigen (PSA) is a protein produced by the prostate gland. Blood levels of PSA can be elevated in men with prostate cancer. For this reason, measurement of PSA in the blood has been used as a screening test for prostate cancer.