Chihuahua
Yes, you can take your dog to a shelter if you are unable to care for it anymore. Shelters can provide care and find a new home for your dog.
Human is the most demanding and least mature to care for all in all
Take the dog to a vet and they will tell you what to do.
then give it to some one who could take care of it
Any that he thinks he can take care of. If you want it to be a surprise get a dog that is easy to take care of and one that is not to wild.
The largest animal on Earth, the blue whale, would also be the hardest to take care of. It would be so difficult that no one has even attempted it, although there are some smaller species of whales that can be kept in an aquarium.
The rottweiler has the hardest bite.
you can't actually take care of a dog if your not physically there, but you can have someone else take care of the dog; or you can accommodate the dog in an area when you are at work or school. Leaving fresh water, food, toys, bed, and a training pad helps if you aren't around.
Yes, you can take your dog to the shelter if you are unable to care for it.
By what?
Yes, if you can take care of it.
If you are trying to keep your dog you have to prove yourself that you can take care of it!