Hello, this is my first time on this board. I am moving soon and will travel around the city on a bike, preferably with my chihuahua as well if that's possible.

I have two concerns, firstly being how to buy groceries for a week on a bike. If anyone has experience doing that: do you have a huge backpack? Also, for those with small dogs: how do you bike with them? Recommendations for very good helmets is appreciated. I apologize if this is the wrong board but I am moving in 10 days so I just want to have plan I guess when it comes to traveling with my dog and grocery shopping.