A sausage is actually a countable noun. The uncountable nouns are usually things too small to count for example salt, sugar and soil.
The noun "sausage" is countable. You can have one sausage, two sausages, etc.
Transport is both countable and uncountable as a noun.
The noun 'steel' is an uncountable (mass) noun, a word for a substance.
Is biscuits countable or uncountable?
Shark is a countable noun.
countable
Countable
The noun 'daytime' is an uncountable noun.
The noun 'animal' is a countable noun. The plural form is animals.
The noun sausage can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be sausage . However, in more specific contexts, the plural form can also be sausages e.g. in reference to various types of sausages or a collection of sausages
Prawn - prawns is the plural - is a countable noun
Pasta is a countable noun