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A good quality ejaculate should be opaque, creamy‐white in color. A yellow, buttery hue may also be seen and is a variation of normal when it occurs in concentrated samples with no apparent aberrations. The yellow coloring may be associated with riboflavin in the diet [26] and is different from a yellow tinge that may be evident with urine contamination. A urine‐contaminated semen sample will usually be variably diluted and will have an odor of urine. (Editor's note: if unsure, utilization of a “BUN strip” [blood urea nitrogen] will confirm or rule out.) Preseminal fluid is clear, watery, and odorless. Semen samples diluted with preseminal fluid will not be opaque but rather have a degree of clarity on a spectrum, comparable with skim‐milk, watered‐down juice, or even clear fluid. Generally, preseminal fluid emission is noted during the EEJ process, but it is not collected in favor of waiting for the appearance of the sperm‐rich fraction. Especially in difficult collections, a variable amount of preseminal fluid will be collected, thereby diluting the sample. A pink or red hue or even streaks of red in the semen sample are usually indicative of blood contamination. The source of the blood should be addressed. Blood‐contaminated samples are common when semen collection follows preputial scraping for Tritrichomonas foetus and Campylobacter foetus, especially if penile protrusion did not occur during EEJ. Clumps of white cellular material in the vial are highly suggestive of a high neutrophil content.