Mules are generally known to have fertility problem. How often do mules give birth to a healthy offspring?
usually
about 50% chance
very rarely
never
Mules are considered infertile, but there have been more than 60 documented cases of foals born to female mules around the world (some of them were even DNA-tested to verify the motherhood). There are no recorded cases of fertile mule stallions.
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Answers by country
usually
about 50% chance
very rarely
never
answers
Australia
55
Republic of Ireland
28
India
255
the Philippines
21
the Netherlands
15
Greece
20
the United States
419
Germany
467
Poland
13788
Austria
69
Switzerland
50
France
13
the United Kingdom
195
Italy
14
Pakistan
26
Canada
22
Sweden
11
New Zealand
12
Nigeria
12
the United Arab Emirates
10