A kind of lizard or other reptile formerly supposed to live in or be able to endure fire.
One of the four classes of nature-spirits which corresponds to the element fire, the others being called sylphs, undines, and gnomes.
A mythical monster made up of many animals: serpent, lizard, bird, lion... It may have many heads and breath fire. To mediaeval Europe, it was dangerous and evil, but people in Eastern Asia believe it has power to help them against more hostile spiritual forces. In the Bible it represents Satan, the devil.
Lion representation in myths, rituasl and arts already appeared in Paleolithic times.
Griffins represent the union of a terrestrial beast and an aerial bird. They are known for guarding treasure and priceless possessions and home in the case of knockers . Usually griffins have the body and back legs of a lion.
Devil is he great adversary (Satan) and "father of lies," Devil is the counterpart in hell of God. Here it means 'don't enter.'
Dolphins appear in a number of hand knockers with different shapes from immemorial times. In the Greek mythology dolphins are always helpers of humankind.
pineapple has traditionally been associated with hospitality and prosperity.
Triton came to be associated with a class of merman-like creatures, the Tritons (Τρίτωνες), which could be male or female, and usually formed the escort of marine divinities. Tritons were a race of sea gods and goddesses born from Triton. REF: Princeton University
The wolf is strongly associated with danger, destruction, making it the symbol of the warrior that will prevents bad spirits from entering the house. In the culture of nomadic people the identification of the warrior with the wolf gave rise to the notion of Lycanthropy, the mythical or ritual identification of man and wolf.