With Pugs it isn't an issue thankfully... Unfortunately it's going the OTHER way! The dogs winning in the ring are in the 20-25lb range usually! The standard calls for 14-18lbs, but no one really cares about it anymore.
See, and this ^^^ always mystifies me.
WHY are Pugs in the "Toy" group at all when
that is the standard? Their standard on height/weight is about the same as Westies ... yet Westies are in the terrier group and not considered toys. It's not just because they are terriers ... the Yorkie temperament is ALL terrier ... but they are in the toy group due to smaller size, which makes sense to me as their standard is so much smaller/lighter than Westies and Pugs.
But why aren't Pugs in the Non-Sporting group since their standard is so much bigger/heavier than the other toys? Especially since they are apparently being bred to be even bigger these days ... up to 25 - 30 lbs? That is NOT a toy-sized dog ... but neither is an 18 lb. dog, which is included in the standard for Pugs.
Itsy bitsy dogs are being bred cause they're "cute" and "easier to carry around in bags". I personally would like to see most of the toy breeds bump their sizes back up to "safe" sizes. Yorkies used to regularly be 8-12lbs and now you see the waify little 2-3 lbers walking around.
^^^That, as far as why many toys are being bred to be smaller and smaller. There's ads all the time on Craigslist and elsewhere from so many people demanding "teacup" size dogs.
They don't even seem to realize that "teacup" is NOT a separate breed or a separate standard. It's
out of standard ... often resulting in fragile and shivering tiny little dogs with many health and dental issues ... and with a life-time propensity to be FAR more prone to hypoglycemia than the normal-sized toys.