Yes. There are many, like iguanas and the extinct iguanodon.
A leech.
Llama
Lionfish.
Lobster
Impala
llama
Impala or Iguana starts with I.
Large-eared pied bat is an animal in Australia. It begins with the letter l.
Cardinal is a bird species. Camel is an animal.
Eel.
Lion Loon
Lion