There are parts of its range where the common toad seems to be in decline. In Spain, increased aridity and habitat loss have led to a diminution in numbers and it is regarded as near threatened. A population in the Sierra de Gredos mountain range is facing predation by otters and increased competition from the frog Pelophylax perezi. Both otter and frog seem to be extending their ranges to higher altitudes. The common toad cannot be legally sold or traded in the United Kingdom but there is a slow decline in toad numbers and it has therefore been declared a Biodiversity Action Plan priority species. In Russia, it is considered to be a Rare Species in the Bashkortostan Republic, the Tatarstan Republic, the Yamalo-Nenets Autonomous Okrug, and the Irkutsk Oblast, but during the 1990s, it became more abundant in Moscow Oblast.