Chimpanzee Ai: 
Color-Kanji letter
matching-to-sample 1.4MB
Dot "counting" 2.5MB
Numerical ordering
2.2MB
Numerical memory span 1.7MB
Laboratory project since 2000:
Working memory of numerals NEW
1. Summary of project
2. Clip0 First day of touching numerals 1 and 2
1) 4/2 numeral onry 1
2) 4/3 numerals 1 and 2
3) 4/13 numerals
1 and 2 mastered
3. Clip1 Touching numerals from 1 to 9
4. Clip2 Masking task (Ayumu, 9 numerals)
5. Clip3 Masking task (Cleo, 6 numerals)
6. Clip4 Masking task (Pal, 6 numerals)
7. Clip5 Limited-hold memory task (Human, 5 numerals, 210 mses)
8. Clip6 Limited-hold memory task (Ayumu, 5 numerals, 210 mses)
9. Clip7 An episode: The memory lasted for 10 secounds
Outdoor booth 28.7MB
Ayumu's
first five years 8.3MB
Pal's neonatal smiling 0.9MB
Ayumu gets a coin as reward 16th Feb.2001
4.74MB
Puchi's rope-dancing 1.43MB
Bossou-Nimba chimpanzee:
Nut-cracking
2.7MB
Ant-fishing 1.3MB
Algae-scooping 2.2MB