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
Greece
22
the United States
426
the Netherlands
16
Germany
490
Poland
13826
Austria
69
France
13
the United Kingdom
195
Switzerland
51
Italy
14
Pakistan
26
Canada
22
Sweden
11
Nigeria
12
New Zealand
13
South Africa
11