Savannah cats are the name given to the offspring of a domestic cat and a serval — a medium-sized, large-eared wild African cat. The unusual cross became popular among breeders at the end of the 20th century, and in 2001 the International Cat Association accepted it as a new registered breed.
Interestingly, savannahs are much more social than typical domestic cats, and they are often compared to dogs in their loyalty. They can be trained to walk on a leash and even taught to play fetch.
Beefalo are the fertile offspring of domestic cattle and American bison.
Crosses also exist between domestic cattle and European bison (zubrons) and yaks (yakows).
The name given to beefalo might be the most suggestive, since the breed was purposely created to combine the
best characteristics of both animals with an eye towards beef production.
A USDA study showed that beefalo meat, like bison meat, tends to be lower in fat and cholesterol.
They are also thought to produce less damage to range-land than cattle
A cross between a false killer whale and an Atlantic bottlenose dolphin, wholphins are hybrids that have been reported to exist in the wild. There are currently two in captivity, both at Sea Life Park in Hawaii.
The wholphin's size, color, and shape are intermediate between the parent species. Even their number of teeth is mixed; a bottlenose has 88 teeth, a false killer whale has 44 teeth, and a wholphin has 66