Hunden haltar fortfarande utan att verka ha ont.

Hunden is the definite singular form of hund (dog), so it means the dog.

• en hund = a dog
• hunden = the dog

Swedish usually adds the definite article to the end of the noun rather than using a separate word like English the.

Haltar is the present tense of halta, which means to limp.

Swedish present tense verbs usually end in -r:

• halta = to limp
• haltar = limps / is limping

In Swedish, the present tense often covers both English simple present and present progressive:

• Hunden haltar = The dog limps / The dog is limping

Fortfarande means still.

It shows that the action is continuing:

• Hunden haltar fortfarande = The dog is still limping

It commonly comes after the verb in sentences like this, though adverb placement can vary depending on sentence structure.

Utan att means without when it is followed by a verb phrase.

So:

• utan att verka ha ont = without seeming to be in pain

This is very common in Swedish:

• Han gick utan att säga något. = He left without saying anything.
• Hon log utan att svara. = She smiled without answering.

You can think of utan att + infinitive as a standard way to say without doing something.

No, it does not need to repeat the subject here.

In Swedish, when the subject is the same as in the main clause, it is very common to use utan att + infinitive without repeating it.

So:

• Hunden haltar fortfarande utan att verka ha ont.

naturally means:

• The dog is still limping without seeming to be in pain.

The understood subject of verka is still hunden.

If you added another subject, the structure would change and would usually mean something different.

Because after att, Swedish normally uses the infinitive form of the verb.

• verka = to seem
• verkar = seems

So:

• utan att verka = without seeming

This is the same pattern as in many other Swedish infinitive constructions:

• att vara = to be
• att ha = to have
• att komma = to come

In Swedish, ha ont is the normal expression for to be in pain / to hurt.

Literally, ha means have, and ont refers to pain or hurting. Swedish often expresses this idea with have, where English uses be:

• Jag har ont. = I am in pain.
• Hunden verkar ha ont. = The dog seems to be in pain.

So ont by itself would not work the same way here.

Ont is the neuter form of ond, but in modern everyday Swedish, learners will most often meet ont in expressions about pain:

• ha ont = be in pain
• göra ont = hurt / cause pain

Examples:

• Jag har ont i ryggen. = My back hurts / I have pain in my back.
• Det gör ont. = It hurts.

In your sentence, ha ont is the key chunk to learn as a whole expression.

Because verka is followed directly by another infinitive here.

The pattern is:

• verka + infinitive

So:

• verka ha ont = seem to be in pain
• verka vara trött = seem to be tired
• verka förstå = seem to understand

You do not say verka att ha ont in this structure.

They are similar in meaning, but verka ha ont is more compact and fits this sentence naturally.

Compare:

• Hunden verkar ha ont. = The dog seems to be in pain.
• Det verkar som att hunden har ont. = It seems that the dog is in pain.

The first is more direct. The second is a fuller clause structure. In your sentence, utan att verka ha ont is the more natural choice.

Very roughly, it is:

• Hunden = the dog
• haltar = limps / is limping
• fortfarande = still
• utan att = without
• verka = seem
• ha ont = be in pain

So a very literal breakdown would be:

• The dog limps still without to seem have pain

Of course, natural English is:

• The dog is still limping without seeming to be in pain.

Sometimes, but fortfarande is the clearest and most standard word for still in the sense of an ongoing situation.

• fortfarande = still, continuing
• ännu can also mean still/yet, but it is used a bit differently and can sound more formal or depend more on context

For this sentence, fortfarande is the safest and most natural choice.

The sentence follows normal Swedish main-clause order:

• Hunden = subject
• haltar = finite verb
• fortfarande = adverb
• utan att verka ha ont = infinitive phrase

So the structure is:

• Subject + verb + adverb + extra phrase

That makes it a very typical Swedish sentence pattern.

Yes. Literally, halta means to limp, but it can also be used more figuratively, like English to limp along or to be flawed / not work smoothly.

For example:

• Argumentet haltar. = The argument is weak / flawed.
• Projektet haltar. = The project is not going smoothly.

In your sentence, though, it is clearly the physical meaning: the dog is limping.

Yes, it sounds natural and idiomatic.

Especially natural chunks here are:

• haltar fortfarande
• utan att verka
• ha ont

A native speaker would understand it immediately, and the sentence flows well in everyday spoken or written Swedish.