I have a housecat, "Lacey" that sits next to me and "nurses" my side - she even "kneeds" her paws against me like kittens do when they are nursing their mother.
"Clair" another house cat - has the need to clean dog ears. Waits for them to lay down...and starts the cleaning routine.
"Abbie" our Corgi licks blankets until there is a huge wet spot...she'll do it for hours.
"Keenan" our labradoodle...spends the nights out doors with Jax our schnauzer. While Jax partrols the entire farm he weighs all of 12-15 lbs. Keenan collects, sticks, cans, horse apples, flitches/snippets of paper, pinecones, peacock feathers, deer bones, plastic - anything he can find and lays them on the deck by the patio door...every night. One night he even brought up a hammer that my son left outside after pounding in a fencing staple.
"Ozzie", little black mixed poodle/terrier. Always has a "dolly" to carry around. It could be a sock, washcloth, mitten, stuffed animal - whatever...carriers it around everywhere - even outside when he goes out.
What a group.