Hello, I'm new to this forum and a new mommy to two cute puppies and I had some questions/concerns:
1. I have a wood floors and it seems a little slippery for my puppies, especially when they get excited. Is this safe? I see them slip here and there while playing with each other and I'm afraid that they will break a bone or something. I also can't carpet the whole apartment so I'm not sure what my options are. I do have a carpet that covers 1/4 of the apartment.
2. They love playing with each other and at times they jump onto each other so hard that the other puppy hits his head on the wall/fence/wherever he may be. He gets up and continues playing but I'm scared he may get a concussion? I'm not sure if puppies are more immune to these type of falls bc they are animals.
3. I also have a 5-year-old yorkie that's currently at my mom's house. When I was raising him I made available solid gold wee bit kibbles 24/7 and there was no problem in raising him into an healthy adult. However, I do see a lot of suggestions on here saying that the owner should feed them twice a day, etc, and no suggestion of leaving it out throughout the day. Is there a specific (unhealthy) reason why? I just refill both water and food and it has worked out fine in the past.
4. I just went to a vet for first time check up and the bill came out to $450 for both two healthy puppies in NYC.

The checkup included first set of vaccinations and stool sample testing. I don't recall what I received with my first yorkie bc it's been so long, but I just wanted to know if that is normal. Also, the vet recommended getting the rabies shot after 12 weeks, is this true?
5. Lastly, I'm planning on getting them microchipped. The vet says it is $70 and I'm wondering if it's reasonable. Also, is there annual fees I should be aware of? How old do my puppies have to be in order to get them?
Thank replies will be greatly appreciated!