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.
Credit: PA. But the letter is derived from the word Day meaning the day on which a military operation begins. The day before D-Day was D-1 and the day after was D+1. D-Day has been used for many different operations but is most closely associated with the Allied landings on Normandy's beaches on June 6 1944.