how does it behave under threat?
When attacked, it adopts a characteristic stance, inflating its body and standing with its hindquarters raised and its head lowered.
Common toad

When attacked, the common toad adopts a characteristic stance, inflating its body and standing with its hindquarters raised and its head lowered.
what is the name of a small toad The common toad. how big can this get? It reaches maturity at three to seven years old but there is great variability between populations.
wiki:6505229
Common toad [SEP] Behaviour and lifecycle
The tadpoles also exude noxious substances which deter fishes from eating them but not the great crested newt. Aquatic invertebrates that feed on toad tadpoles include dragonfly larvae, diving beetles and water boatmen. These usually avoid the noxious secretion by puncturing the tadpole's skin and sucking out its juices. A parasitic fly, "Lucilia bufonivora", attacks adult common toads. It lays its eggs on the toad's skin and when these hatch, the larvae crawl into the toad's nostrils and eat its flesh internally with lethal consequences. The European fingernail clam ("Sphaerium corneum") is unusual in that it can climb up water plants and move around on its muscular foot.