Only in the most general sense, in that both giraffes and whales are mammals.
Whales live in the ocean, giraffes lives on the Savannah, and aren't known to go wading on the beach. So no, whales don't eat giraffes, as they never meet.
The only mammals that do not have live birth are monotremes. Giraffes and whales are mammals, but not monotremes. So yes.
No, giraffes and zebras are not related.
Yes!
No they aren't. Blue whales are.
Small Poxs is the #1 death related illness for giraffes
Giraffes are the tallest animals, so no animals are taller. Some whales are longer, so there are bigger animals.
Dolphins are related to whales and porpoises.
Yes, they are related to one another. They are both in the family Balaenopteridae, which is in the subspecies of whales called Baleen Whales.
They are actually more related to dolphins than whales.
They evolved from even toed ungulates, or animals with even hoofs like cows and giraffes.
Both are mammals. That's it, they are not related. The walrus is a pinniped, related to seals, whales are Cetaceans, related to porpoises and dolphins.