An infected tick must be attached for 24 to 48 hours to transmit Lyme disease (and at least 12 to 24 hours to transmit anaplasmosis, another serious tick-borne disease). Lyme disease is unfortunately a fairly common canine disease. Symptoms can include fever, reduced energy, and lameness.
D-day(n.) (Mil.) the day designated for the beginning of a planned attack by a military force; in communications the day is often otherwise unspecified for security reasons; as, the day before D-day the troops will move into position.
Normandy beach. D-Day is a term used in the military to mean the actual day a major operation or event is to begin. The days leading up to a D-Day are called D-1, D-2, D-3, and so on. The days after a D-Day are D+1, D+2, D+3, and so on. Many different days in military history were called D-Day.