No he didnt yelp or seem hurts. I will ask the vet to look at them closely next visit

And i agree! I will never pull my dogs ear no matter what he did. Let alone let others do it. We threw them out pretty quick. They like to teach me how to raise my dog. This include telling me to neuter him as soon as I get him. Tell me to smack my dog when he chew. Tell me to not let the dog play outside, only to go potty (they live in a one bedroom apartment). Tell me to take him to petsmart while he's a puppy because I will get a lot of attention. Tell me I'm crazy to wait on breeder to get my pup and that I can go get those selling in the parking lot. Sometimes I feel like she purposely giving me all this bad advice since its all sounds so stupid.
So how long is the teething last?