Ther are millions of words ending in 'Ing' that will describe dogs, but I will only list a few.
Here are some:
loving caring annoying sometimes lol
barking (all the time) :)
soothing Flaming beautiful
Schooling studying reading
Winning, being victorious, not losing.
Bawling, weeping, greeting (Scotish), howling
kissing, hugging, loving, smiling, laughing
Rustling, shimmering, dying, dancing, and lying.
Glistening, sparkling, shining, enchanting, etc.