Although Iberolacerta horvathi lives in montane habitats up to 2000 meters in south of its range, it may not be regarded as a high altitude species. This also suggests that Iberolacerta species may not be generally restricted to high-altitude mountain habitats, unless they are forced by competitive pressure (e.g. by Podarcis species which have benefited from the current postglacial warm climate.

Within its distribution area, Iberolacerta horvathi co-occurs with the following species:

• Podarcis muralis frequently shows a spotted or orange throat whereas Iberolacerta horvathi has a white unspotted throat. The latter one can be identified by the characteristic tail segments, which are alternately broad and narrow and it has a more pointed snout than Podarcis muralis.
• Zootoca vivipara has a shorter snout and a less elongated body the Iberolacerta horvathi.