 In most amphibians , there are four digits on the fore foot and five on the hind foot , but no claws on either . Some salamanders have fewer digits and the amphiumas are eel @-@ like in appearance with tiny , stubby legs . The sirens are aquatic salamanders with stumpy forelimbs and no hind limbs . The caecilians are limbless . They burrow in the manner of earthworms with zones of muscle contractions moving along the body . On the surface of the ground or in water they move by undulating their body from side to side . 
