Yes, tadpoles grow hind legs first. Front legs typically develop after the hind legs.
Right hind, left front, Left Hind, Right front
The hind limbs are much longer than the forelimbs, but forelimb to hind limb ratio is quite variable. Toads and toad-like anurans have relatively short hind limbs.
Giraffes hind legs and front legs are both very strong, however, its front legs are just a bit stronger than the hind legs as they are shorter.
cat, camel, giraffe
Both. Kangaroos have long hind legs and short front legs.Their hind legs have large, strong tendons which act as "springs". The springing motion requires less energy than running does, so kangaroos are able to bound higher and for longer distances than other mammals with the standard four legs can run. They also have elongated hind feet for bounding. Their front legs are short as they use them to grasp branches to bring young leaves and shoots closer to their mouths for feeding. Their short front legs are also crucial for when kangaroos "walk". Kangaroos walk by pulling themselves along by their short front legs, and using their tail to help push them along. Their long, strong hind legs are useless for walking, as they cannot move independently of each other.
The fore limbs are at the front of the frog and the hind limbs are at the back.
The back legs are webbed, but the forelimbs are not. The forelimbs are basically the "front legs."
The majority of frogs have four toes on their front legs and five toes on their hind legs. Aquatic frogs have long toes that are webbed.
The back legs are webbed because they are stronger. a frog uses its back legs to jump, and to swim. they hardly use front feet for swimming.
Kangaroos have two strong hind legs and two smaller front legs.
The legs may shake if the dog is frightened.