Puricele este pe pisică.

Because Romanian usually puts the definite article at the end of the noun instead of using a separate word like English the.

• purice = flea / a flea
• puricele = the flea

So -le is part of saying the flea.

Romanian often uses a bare noun after a preposition in simple location expressions, where English would choose a or the from context.

So pe pisică is a normal short locative phrase. Depending on context, English may translate it as on the cat or on a cat.

If you want to make the meaning more explicit, compare:

• pe pisică = on the cat / on a cat, depending on context
• pe o pisică = on a cat
• pe pisica mea = on my cat
• pe pisica aceea = on that cat

Here pe is simply the preposition on.

That is different from another common Romanian use of pe, where it marks certain direct objects, especially people, as in Văd pe Maria. In Puricele este pe pisică, pe pisică is a place phrase, not a direct object.

Yes. Este is the full form, and e is the short everyday form.

So both are correct:

• Puricele este pe pisică.
• Puricele e pe pisică.

In normal conversation, e is often more common.

After the preposition pe, the noun is in the accusative.

In this sentence, though, the form pisică looks the same as the basic dictionary form, so you do not see a big change. In Romanian, case differences are often shown more clearly in articles, adjectives, pronouns, or determiners than in the noun itself.

• purice is masculine
• pisică is feminine

It matters for article forms and agreement in other contexts. For example:

• puricele = the flea
• pisica = the cat

But it does not change the verb here: este stays the same regardless of whether the subject is masculine or feminine.

A useful approximation is:

• puricele → pu-RI-che-le
• pisică → pi-SI-cə

A few key points:

• ce sounds like che in check
• ă is a schwa sound ə, like the last vowel in sofa
• the stress is on RI in puricele
• the stress is on SI in pisică

The neutral, most basic order is:

Puricele + este + pe pisică
subject + verb + location

Romanian can change word order for emphasis, but this is the straightforward version a learner should use first. In everyday speech, the shorter Puricele e pe pisică sounds especially natural.

Normally no. In standard Romanian, you keep the verb a fi in a sentence like this.

So:

• Puricele este pe pisică. = correct
• Puricele e pe pisică. = correct
• Puricele pe pisică. = not standard

Romanian is not like some languages that regularly omit is in the present tense.