---

All answers having "Boxers" as clue:

4 Character Answers:

---

DOGS

PUGS



6 Character Answers:

---

UNDIES



7 Character Answers:

---

CHINESE

POOCHES

RINGMEN



15 Character Answers:

---

FIGHTERSINARING

LOUISANDDEMPSEY

POWERFULCANINES

SHIPPINGWORKERS

SHORTSWORNBYMEN



23 Character Answers:

---

FRAZIERBAERANDPATTERSON