What to look for:
Make sure it's unsalted, in water (not oil or any sauce), and has skin and bones intact. The canning process makes the bones soft and edible.

Ingredient label:
Should have sardines and water as the only ingredients, no salt. Sardines come with skin and bones by default, so unless the label says boneless and skinless, they should be included. If you want to be extra sure, check the calcium content - regular sardines would have about 30% daily value for calcium per serving, boneless sardines would only have about 5%.

Additional tips:
Once the can is opened, remove unfinished portion from the can and place in a glass storage container in the refrigerator, and finish it within two days. These are great for humans too so you can share the can with your pets!

Where to buy locally:

• Whole Foods has Crown Prince Natural unsalted sardines in water for $3.50 per 3.75-oz can (as of 5/18/2016)
• Trader Joe's has store brand unsalted sardines in water for $1.29 per 3.75-oz can (as of 7/10/2016) but these are high in sodium even though they're unsalted (sometimes the fish naturally pick up salt from the sea water if the fishery stores the fish in there too long during transport) - might be OK in moderation if you can't find anything better
• Other stores that carry health foods might have these

Where to buy online:
Single cans are too costly to process and ship, so they're typically sold in full cases online.

Wild Planet Sardines No Salt in Water, 4.375 Ounce Click here to buy from Amazon Pack of 12

Crown Prince Natural One Layer Brisling Sardines in Spring Water, 3.75-Ounce Cans Click here to buy from Amazon Pack of 12

Season No Salt Added Sardines in Water, 4.375 Ounce Click here to buy from Amazon Pack of 12

What to look for:
Make sure it's unsalted, and has skin and bones intact. The canning process makes the bones soft and edible.

Ingredient label:
Should have salmon as the only ingredient, no salt. If label doesn't say whether skin and bones are present, check the calcium content which would be 0% for boneless salmon, or about 10% for salmon with bones.

Additional tips:
Once the can is opened, remove unfinished portion from the can and place in a glass storage container in the refrigerator, and finish it within two days. These are great for humans too so you can share the can with your pets!

Where to buy locally:

• Whole Foods has Crown Prince Natural unsalted pink salmon with skin and bones for $4.99 per 7.5 oz can (as of 5/18/2016)
• Other stores near me don't seem to carry canned salmon that's both unsalted AND with skin and bones (only one or the other)

Where to buy online:
Single cans are too costly to process and ship, so they're typically sold in full cases online.

Pure Alaska Salmon Co. No Salt Added Redhead Wild Alaska Sockeye Salmon 7.5 oz Cans Click here to buy from Amazon Pack of 12

Pure Alaska Salmon Co. No Salt Added Thinkpink Wild Alaska Pink Salmon 7.5 oz Cans Click here to buy from Amazon Pack of 12

Crown Prince Natural Pink Salmon - Low in Sodium, 7.5 oz Cans Click here to buy from Amazon Pack of 12

What to look for:
Make sure it's unsalted, in water (not oil or any sauce) or with no added liquid, and chunk light skipjack or tongol tuna (not albacore, aka solid white tuna, or chunk light yellowfin tuna which are too high in mercury).

Ingredient label:
Should have tuna and water as the only ingredients, or only tuna, no salt.

Additional tips:
Once the can is opened, remove unfinished portion from the can and place in a glass storage container in the refrigerator, and finish it within two days. These are fine in moderation for humans too so you can share the can with your pets!

Where to buy locally:

• Whole Foods has store brand unsalted chunk light skipjack tuna in water for $1.50 per 5-oz can (as of 5/18/2016)
• Other stores that carry health foods might have these, but most of the ones I've checked only carry unsalted chunk light yellowfin tuna or albacore/solid white tuna, which are too high in mercury

Where to buy online:
Single cans are too costly to process and ship, so they're typically sold in full cases online.

Crown Prince Natural Chunk Light Tongol Tuna in Spring Water, No Salt Added, 5 Ounce Cans Click here to buy from Amazon Pack of 12

Natural Value Chunk Skipjack Tuna in Spring Water, No Salt, 5 Ounce Click here to buy from Amazon Pack of 24

What to look for:
Make sure it's fomulated specifically for cats, and contains both vitamin E and taurine.

Where to buy online:

VetriScience Nu Cat Multivitamin Supplement adult cats: 4 tabs/day kittens: 2 tabs/day Click here to buy from Amazon 90 Chewable Tablets

Pet Naturals of Vermont Daily Multi for Cats give 1 chew daily Click here to buy from Amazon 30 Chews