Done
Not sure if this could be a reason for your higher than expected male population...
When I was doing the survey (on a PC rather than phone/ipad), to move on to the next Q/click away from the text box I'd just completed I just clicked the mouse out of the box... when I came to the male/female Q I just clicked away from the previous Q and as my mouse pointer was
near to the 'Male' answer (not on it) it auto-selected 'male'... I'm female and having read your post spotted this and corrected it to female.
May just be me with my dodgy technique but I would have expected the respondents to be 90% female, crazy cat ladies tend to be more prevalent than crazy cat men
PS There's a pet section on MoneySavingExpert (Martin Lewis MSE) which is fairly busy.
PPS Screenshot of survey (I cleared cookies to allow me to start to take it again, didn't submit it this time)... Even clicking away from the text box I just completed where the red circle is would select 'male'...