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.
Prostate Specific Antigen Test. The Prostate Specific Antigen (PSA) test is a common screening for prostate cancer. This test measures a protein that is produced by the prostate gland. Elevated PSA levels may indicate a higher likelihood of having prostate cancer. The PSA test is also used to monitor a person's response to cancer treatment.