Both types of ears are really good in terms of saving your shoes and furniture when puppies are teething, which will last pretty much from time you bring them home till they are 7-8 months old. Chewing will continue after as it becomes relaxing activity or coping mechanism for anxiety. They also help naturally clean dog teeth without effect of “sandpaper” grinding teeth down.
Pig ears are more smelly as they are smoked or roasted to melt some excessive fat, darker color, however they don’t last as long because they are little softer. 8-10 weeks pup will work on them for awhile, but by 4 months old they will crunch them in 5-10 min. These are good to get puppies to like them. Best deal we found so far was in Costco 20 ears for $25 while they last, but you can check out Amazon or Chewy for a close match deal. D&B Supply has 10 pig ears for $13, so almost as good as Costco. Do not pay more than $2 per ear unless you own an oil well or a gold mine (we had reports of as much as $5 per ear from Pet stores). When you're buying online, make sure they are whole ears and not “slivers”, which pretty much the same ears cut into small pieces and sold per count of pieces.
Cow ears are not naturally as fatty, so they are usually baked. Cow ears are harder to chew up, even adult dog has to work 15-20 minutes to get one of them down. These don’t smell as much, but dogs love them. You can find decent deal on Amazon or Chewy, really good deal if you can get them for $0.50 a piece, but you can pay all the way to $1. Much more is a rip off. Make sure they are whole ears and not “slivers” as well buying online. Important, do not offer more than couple a day, as they caused constipation in some dogs, and watch your pet closely. It never happened to our dogs, but saw reports around, may vary by dog or diet.
Pay attention to late warnings, some pig ears had been recalled due to salmonella concerns.
The life is long and full of dangers 😂 Puppies discovering pig and cow ears.