Personalized Beaglier Dog Beagle Cavalier King Charles Toddler Long Sleeve T-Shirt. Beaglier dog lover Toddler Long Sleeve Tee - White gift has cute Loved By A Beaglier design with pet toys logo for the owner of a Cavalier King Charles and Beagle mix pet. A classic for Fall, Winter and Spring, these long sleeve toddler t-shirts are sure to be a staple in your child's wardrobe. Whether layered or alone, this t-shirt is soft yet durable enough to stand up to your toddler's playtime demands.