dog
犬 centers on the animal dog, a common domesticated canine.
犬 is a pictograph of a dog, with the modern form showing a stylized body and a dot representing the ear or a distinguishing mark.
The shape 犬 looks like a person 大 with a dot marking the dog's ear or collar. See the dot and think of a dog.
For ケン, imagine a dog named Ken: Ken -> ケン, and Ken the dog is right there in the shape.
dog (Canis (lupus) familiaris); canine
puppy
pet dog; beloved dog
shiba inu (dog breed); shiba; brushwood dog
loser; failure; underdog; unsuccessful person; non-achiever; loser dog
pet dog
stray dog
hound; hunting dog; gun dog
rabies
guide dog; seeing-eye dog
watchdog; guard dog
mad dog
stray dog; ownerless dog
cats and dogs (as an example of a bad relationship); dogs and monkeys
(stone) guardian lion-dogs at a Shinto shrine
eyetooth; cuspid; canine (tooth); dogtooth
dog sled; dog sleigh
fine dog
Japanese wolf (Canis lupus hodophilax, extinct)
dogfight; dogfighting