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Dog's astonishing reaction to meeting adopter she'd never seen before (Original Post) catbyte May 4 OP
What a precious, loving pooch Grim Chieftain May 4 #1
Wonderful Picaro May 4 #2
Speaking of tennis balls swong19104 May 4 #3
balls Submariner May 4 #4
As I have said so many times, no matter how obscure a topic might be... 3catwoman3 May 4 #5
If it's just N2, you're breathing 78% N2 all the time. AZ8theist May 4 #7
So beautiful Chicagogrl1 May 4 #6
So sweet Alice Kramden May 4 #8
Where are the onions. I swear there has to be onions in my area. n/t aggiesal May 4 #9
love this video. thanks for posting it. nt orleans May 4 #10

swong19104

(669 posts)
3. Speaking of tennis balls
Mon May 4, 2026, 03:37 PM
May 4

When you open a new can of tennis balls, you can get a whiff of thi particular odor. I don’t know how to describe it, but it’s quite noticeable and specific to tennis balls. I wonder whether that is safe for dogs. Humans, of course, don’t put tennis balls in their mouths. But dogs do, and is it safe for them? Just asking.

Submariner

(13,471 posts)
4. balls
Mon May 4, 2026, 03:46 PM
May 4

AI: Tennis balls are packed in cans under high-pressure gas (usually nitrogen or air) to maintain their bounce. The cans are sealed at about 12-14 psi higher than atmospheric pressure, which prevents the air inside the porous rubber balls from escaping until the can is opened. This pressurized packaging keeps them fresh and prevents them from going dead

3catwoman3

(29,944 posts)
5. As I have said so many times, no matter how obscure a topic might be...
Mon May 4, 2026, 04:10 PM
May 4

...there will be someone on DU who knows all about it.

AZ8theist

(7,720 posts)
7. If it's just N2, you're breathing 78% N2 all the time.
Mon May 4, 2026, 04:24 PM
May 4

I would surmise that smell is because of the materials the tennis balls are made from. Just like that "new car smell" if from a combination of materials used in construction of the cars interior. As the plastics, leathers, trim, etc., outgas you slowly lose that aroma over time.

I used to take one of my doggos to the dog park and it was loaded with tennis balls. Tennis balls covered in the filthiest of everything imaginable!! The dogs didn't seem to care much!

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