A pulga é pequena.

A is the feminine singular definite article, so it normally corresponds to the.

In Portuguese, especially in general statements, you often use the definite article where English might not. So A pulga é pequena can mean:

• The flea is small if you are talking about a specific flea
• a general statement like The flea is a small insect / Fleas are small, depending on context

If you wanted a flea in the indefinite sense, you would usually say uma pulga.

No. Pulga is grammatically feminine, not necessarily biologically female.

Portuguese nouns have grammatical gender, and pulga happens to be a feminine noun. That is why it uses:

• a instead of o
• pequena instead of pequeno

This is just a grammar pattern. It does not automatically tell you the animal’s real-life sex.

Because adjectives in Portuguese usually agree with the noun in gender and number.

Since pulga is feminine singular, the adjective must also be feminine singular:

• masculine singular: pequeno
• feminine singular: pequena
• masculine plural: pequenos
• feminine plural: pequenas

So A pulga é pequena is the correct agreement.

In Portuguese, adjectives often come after the noun by default.

So:

• a pulga pequena = the small flea

This is more normal than putting the adjective first.

You can sometimes place adjectives before the noun, but that can sound more literary, emphatic, or slightly different in tone. For example, a pequena pulga is possible, but a pulga pequena is the more straightforward pattern.

In your sentence, though, pequena comes after é, so it is not directly inside the noun phrase. It is acting as a predicate adjective: The flea is small.

É is the third-person singular present tense form of the verb ser (to be).

So here:

• a pulga = the flea
• é = is
• pequena = small

It matches pulga, which is singular, so é means is.

The accent is important.

É with an acute accent is the verb form is.

Without the accent, e is the word and.

So:

• é = is
• e = and

The accent also shows the stressed vowel pronunciation.

Not if you want a full sentence meaning The flea is small.

Portuguese normally requires the verb ser here, just like English requires is.

• A pulga é pequena = full sentence
• A pulga pequena = just a noun phrase, like the small flea

So leaving out é changes the structure completely.

A simple learner-friendly pronunciation is:

POOL-gah

Stress is on the first syllable: PUL-ga.

A couple of details:

• the u sounds like oo in food
• in many Brazilian accents, the l at the end of a syllable sounds a bit like w
• so you may hear something closer to POOW-gah

You do not need to exaggerate that at first; POOL-gah is a good approximation for learners.

A good approximation is:

peh-KEH-nah

The stress is on que: pe-QUE-na.

Important detail:

• in que, the u is not pronounced as w
• so qu before e sounds basically like k

That is why pequena sounds like peh-KEH-nah, not peh-KWEH-nah.

It can be either, depending on context.

Possible interpretations:

• specific: you are talking about one flea that both speakers know about

  • A pulga é pequena. = The flea is small.

• generic/general: you are talking about fleas as a type

  • A pulga é pequena. = The flea is small / Fleas are small.

Portuguese often uses the singular definite article for general truths, more than English does.

You can say Uma pulga é pequena, but it usually sounds more like A flea is small or One flea is small, which is less natural as a general statement in isolation.

Compare:

• A pulga é pequena

  • natural for a general truth or a known specific flea

• Uma pulga é pequena

  • refers to one flea, often newly introduced into the conversation

So in a basic example sentence, A pulga é pequena is the more natural choice.

Usually no, not in normal standard Portuguese.

For a singular count noun like pulga, Portuguese normally wants an article:

• A pulga é pequena = natural
• Pulga é pequena = unnatural in most ordinary contexts

English often allows zero article in ways Portuguese does not. That is a very common adjustment for English speakers learning Portuguese.