Gorilla ( Gorilla gorilla gorilla ) and orangutan ( Pongo abelii ) understanding of first- and second-order relations
Nestling recognition via direct cues by parental male bluegill sunfish ( Lepomis macrochirus )
Chunking versus foraging search patterns by rats in the hierarchically baited radial maze
Salamanders ( Plethodon cinereus ) go for more
Temporal landmarks
Task preparation in macaque monkeys ( Macaca mulatta )
The use of prosodic cues in language discrimination tasks by rats