They have an instinct to chase. Catching balls is their natural reaction to an object they see as "prey".
Dogs love to chase tennis balls due to their inherent hunting instincts. Specifically, dogs have evolved to pursue any moving object, as this trait enabled them to hunt successfully.
gatch them with a master ball but trade the master balls
If one of the dogs parents was a dog that had webbed feet, such as a retriever, than it could of inherited that trait.
Mate 2 dogs that have the desired trait.
Because balls are made of rubber, and dogs are not.
Dogs like sport balls no matter what type.
Patience!
you get three master balls and look for them allover then cach em..all lol
Mate 2 dogs that have the desired trait.
Mate 2 dogs that have the desired trait.
If the dog has a big mouth at the most is 6 tennis balls.
Mate 2 dogs that have the desired trait.