During the glacial periods animal and plant species tried to cope with the changing environmental conditions. Particularly for the animal species one of the most important limiting factor could have been food availability. That’s why they moved to warmer areas for food. This mainly happened to species with higher mobility. 

Endemic species are mostly evolved in isolated areas, but because glacial and interglacial periods have been alternating several times in Europe, more endemic species can be found also in the mentioned three peninsulas, which served as isolated refugium areas.  

Common English name: Common Lizard, Viviparous Lizard

Classification:    
Kingdom – Animalia

Phylum – Chordata

Class – Reptilia

Order – Squamata

Family – Lacertidae

Genus – Zootoca

IUCN Red List category: Least concern

Current population trend: Decreasing

Geographic range: see picture

Habitat type: Grassland, Wetlands, Meadows, Woodlands, Coastal areas

Brief description: Viviparous lizards have a wide color range, varying between brown, red, grey, green, or black. This species displays sexual dimorphic color patterns on its underside, with males being brightly colored in yellows, blues, oranges, and greens. Males are also easily identified by having white spots in a longitudinal arrangement on their dorsal side. The base of the tail in sexually mature males is also noticeably thicker than in females. Sexually mature adults of both sexes typically weigh between 2 to 5 g, with total lengths of 50 to 77 mm.

Viviparous lizards are the only lizard species that is known both to give live birth and to lay eggs. In the northern portion of the range and at high altitude it is viviparous, in the southern portion it is oviparous.

More info: https://animaldiversity.org/accounts/Zootoca_vivipara/#physical_description

 http://reptile-database.reptarium.cz/species?genus=Zootoca&species=vivipara

Common English name: Agile frog

Classification: 
Kingdom – Animalia

Phylum – Chordata

Class – Amphibia

Order – Anura

Family – Ranidae

Genus – Rana

IUCN Red List category: Least concern

Current population trend: Decreasing

Geographic range: see picture

Habitat type: Freshwater, Grassland, Woodlands

Brief description: The species belongs to the 'brown frog' group of species. Dorsal coloration yellowish, brown, greyish or rufous. chevron-shaped (^) dark glandular spot on neck. Dark spots on dorsal surface vary in number, arrangement and size. No spots on flanks. Temporal spot large. Belly white or white-pink, without pattern. Tympanum large and positioned very close to the eye. Vomerine teeth present. Posterior part of the tongue free and forked. Toes webbed. Pupil of the eye horizontal. Body slender. Snout sharp. No male vocal sacs. Legs very long. Shin (knee to ankle) shorter than body by 1.46-1.86 times. When the shins are positioned perpendicularly to the body axis, the heels overlap. When the hind leg is stretched along the body, the tibio-tarsal articulation always exceeds the tip of snout.