A title such as dangerous animals of Croatia implies that Croatia is a dangerous country with lots of deadly animals.
Although that is very far from the truth, there are still some animals to which you should pay attention and take some extra precautions if encountered.

Below is a list of some of those animals in order of dangerousness from the most dangerous to the least.

1. Dangerous animals of Croatia: Brown bear (lat. – Ursus arctos, local – medvjed, medo) is known to be the largest terrestrial carnivore distributed throughout Europe, Caucasus, Siberia and Mongolia and has many recognized subspecies depending on their habitat. Therefore, in Europe, the most distributed bear subspecies is the European brown bear (Ursus arctos arctos). Read more

2. Dangerous animals of Croatia: Horned viper (lat. Vipera ammodytes, local – poskok) is considered to be the most venomous and most dangerous snake in Europe. It inhabits the southern parts of Europe, Italy, Slovenia, Croatia, Bosnia-Herzegovina, Serbia, Montenegro, Albania, Republic of Macedonia, Greece, Romania, Bulgaria, Turkey, Georgia and Syria, and the Middle East. Read more

3. Dangerous animals of Croatia: European viper or, in some literature, Common European viper or Common European adder (lat. – Vipera berus, local – ridovka) is a venomous snake, extremely widespread and can be found throughout most of Western Europe and as far as East Asia. It is the best studied snake in the world. Read more

4. Dangerous animals of Croatia: Karst viper (lat. Vipera ursinii macrops, local – planinski zutokrug) is considered to be the smallest viper in Europe, adult’s average 40-50 cm (16-20 inches) in total length that lives in small and fragmented populations throughout Europe. Read more

5. Dangerous animals of Croatia: Mediterranean black widow (lat. Latrodectus tredecimguttatus) or sometimes called the Steppe spider is commonly found throughout the Mediterranean region from Portugal to southwest and central Asia. It is considered one of the most venomous spiders. Read more

6. Dangerous animals of Croatia: Greater weever (lat.Trachinus draco, locally – pauk,ranj), belongs to the family Trachinidae. It is the most common weever fish in the Adriatic sea. Along the Greater weever there are also three more species from this family. Read more

7. Dangerous animals of Croatia: Jellyfish is a part of the Cnidarian order and in the Adriatic sea there are a couple species that are poisons. The most well-known are Aurelia hat (Aurelia aurita), Perple-stripped jelly (Pelagia noctiluca) and Barrel jellyfish (Rhizostoma pulmo). Read more

8. Dangerous animals of Croatia: Sea urchin are part of the echinoderms family of sea invertebrates. They have a round body, covered with sharp spines on the outside. Read more

9. Dangerous animals of Croatia: Fire salamander (lat. Salamandra salamandra, local – dazdevnjak) is the most well-known species of salamander in Europe. Found most in southern and central Europe, they are commonly found at altitudes between 250 meters (820 ft) and 1000 meters (3.300 ft). Read more

I would also like to add that these animals, although dangerous, are almost never encountered in urban environments and as such should not be feared unless one goes for a walk through the woods, goes mountain-climbing, swimming etc.