Wicker shopping cart, similar here
I can't remember what living in Paris was like before Kar and Toffel. Pets transform a home, especially ours, which might feel very empty without two cuddly fluffballs around. It's reassuring to come back to.
I feel bad for pets kept indoors, especially in tiny apartments with no light or space to run around. You'd be surprised at the number of big dogs I see in little studios- chow chows, greyhounds, and dalmatians. Of course, Paris is a city of little dogs, which accompany owners to restaurants, the grocery store, and the hair salon. Growing up, we had a german shepherd, a half-wolf shepherd dog, and multiple cats, so I subconsciously stopped wearing black, preferring lighter, fuller fabrics that hide fur and claw marks. Some of my friends are allergic, but we control things with careful housekeeping.
It's harder to regulate cat allergens, which are tinier and more persistent than dog dander. Frequent bathing / grooming and daily litter scooping helps. Allergists advise weekly brushing and bathing for pets (weekly for cats, three to six months for dogs), since studies indicate wipes are ineffective. Try a wooden brush for dogs and metal brush for long-haired cats. My angora cats despise the Furminator (Tender Care brushes are plastic-free), but they love water, rinsing themselves off almost daily to remove excess hair. They rarely get furballs.
Having bare floors and minimal furniture helps manage allergen levels. Housekeeping guides say at a minimum, pet owners should vacuum once (carpets, upholstered furniture, and curtains) and dust twice a week. Rake or brush carpets before vacuuming, and beat rugs regularly, steam cleaning when possible. I don't vacuum, but I brush the couch and bed daily, and hand-dust floors a few times a week, opening windows for air circulation. A vegan, plastic-free wood and natural rubber brush removes hair better than sticky rollers, which leave behind fur-collecting residue. Others prefer a boar bristle clothes brush for dark items. We wash everything weekly, and I scoop everyday, dusting hard surfaces with a flour sack towel.
If you have areas you want your cats to stay away from, or if your cat pees outside the litter box, lemon peels are a deterrent. Lemon also removes urine odors and stains from wood floors. Extrapolating from my cats, scratching posts don't prevent clawed furniture. Stiff leather, canvas, and microfiber, a material I strongly dislike, conceal claw marks better than other fabrics. To remove stains from leather, use a damp cloth with homemade saddle soap or savon de marseille. Our couch has a washable, removable cotton / lyocell / polyester / linen cover, which, while irresistible to kitten paws, is nubby enough to camouflage scratches. If you can't wash your upholstery, sprinkle with baking soda, leave half an hour, then vacuum. To stop dogs from chewing furniture, try spraying vinegar- the smell dissipates as far as humans can tell, but dogs continue to detect it.
My only advice for smaller pets comes from when my mom had guinea pigs and I took care of the class hamster for awhile :) Cages need to be cleaned two to three times a week. Disinfect all pet items with boiling water, and leave them in the sun as often as possible. I wash and boil my cats' bowls, scrub the litter box with baking soda, and set the box and scoop in the sun a few hours every week. Vacuuming is the only way I know to get rid of fleas and eggs- one vet told me garlic provides safe flea protection for dogs, and apple cider vinegar or nutritional yeast protects cats. Don't confuse the two: Many dogs are allergic to yeast, and garlic is toxic to cats!