ten donkeys

Juha bought ten donkeys at the market. He wanted to take them to his farm outside the town. He jumped on the back of one to ride it. To make sure he had all of them, he began to count. 1-2-3-4-5-6-7-8-9. Juha jumped down to look for the lost one. He counted again. 1-2-3-4-5-6-7-8-9-10! They were all there! He jumped back up. Just to make sure, he counted again. Only 9 again. He got down and counted. All ten.
finally ;Juha shrugged his shoulders and decided to walk and he said : I walk and have all ten; better  than I ride a donkey  and lose one .