ANY animal that has a skeleton has joints.
no they dont
Crotch them, if the dogs go for your crotch, file for sexual harrasment.
Ask your vet!
yes it is, but not too much, old dogs cannot exercise as much as younger dogs because sometime they have joint problems and they just dont have the energy. little exercise prevents their joints from becoming stiff, this causing them to not being able to walk. so little exercise will keep their joints loose and movable.
It really depends of what you are trying to achieve with your dog, ie a glossy coat or heathy joints. Admittedly the majority of supplements for dogs are focused around healthy joints so I will assume this is the type of supplements you are looking for. If this is the case you should look for a supplement containing glucosamine and chondroitin, preferably one that is being used and recommend by vet's. Have a look at www.dog-pain-relief.org. The guy who made it has videos from vets about supplements and recommends a supplement for dogs joints.
Amazing dogs can take a lot of the same medications and supplements that humans can, not all but some. For stiff joints both people and animals need glucosamine. Glucosamine is also given to older horses to help with stiff joints. Talk to your veterinarian about specific dosages for your dog.
knee joints because they help you walk
the different groups of joints in the body are saddle joints gliding joints hinge joints and ball and socket joints .
There are two general types of joints, movable and immovable. Under the movable category there are four types of joints: Hinge joints: in knees and elbows Pivot joints: in neck Gliding joints: in wrists and ankles Ball-and-socket joints: in shoulders and hips
There are knees and elbows, they are the major joints.
sliding joints hinged joints fixed joints
Hinge joints, ball-and-socket joints, ellipsoid joints, saddle joints and pivot joints.