Otter
koala
Ovine (refers to sheep).
* Brook * Stream * River * Creek
Nocturnal mammal: bat
The answer is Adana.It's five letters, ending in A. Adana is a city in southern Turkey which sits on the Seyhan River.
The word "river" can be spelled by using five letters from the word "university."
bat
The likely word is "hippopotamus" (hippo, the large river-dwelling mammal).
A five letter word for bravery is valor.
A five letter word for "irritate" is "annoy."
A five letter word for a game is "match."
Scarf is a five letter word for muffler.