Fthey are not dangerous at all/ toads are (big) than frogs/ but toads legs are (short) thas frogs

 toads are BIGGER than frogs/ but toads legs are SHORTER thas frogs'

Toads are bigger than frogs but toads' legs are shorter than frogs'. Жабы больше, чем лягушки, но ноги у жаб короче, чем у лягушек.