src/main/java/com/github/ricksbrown/cowsay/Cowloader.java
private static boolean isCowfile(final File cowfile) {
		if (cowfile != null && cowfile.exists()) {
			return cowfile.getName().endsWith(COWFILE_EXT);
		}
		return false;
	}
private static boolean isCowfile(final File cowfile) {
		if (cowfile != null && cowfile.exists()) {
			return cowfile.getName().endsWith(COWFILE_EXT);
		}
		return false;
	}
Determine if this File appears to be a genuine cowfile.
This is not a deep check, more rigor will be applied later.
@param cowfile A potential cowfile.
@return true if this File seems to be a cowfile.