John Porter's brother Mike, 66, died at the scene after the men were knocked to the ground by cows in Wiltshire.
After an inquest jury returned a verdict of accidental death, he said he hoped more could be done to prevent a further tragedy.
The jury noted that there had been previous attacks in the same fields.
And jurors noted a lack of separation between cattle and public, in a narrative accompanying their verdict.
Mr Porter, 74, from Monkton Combe, near Bath, told the BBC: "Accidents will always happen, sadly. But I do think that we do need to look at ways in which we can make our footpaths safer."
His brother was visiting from Edinburgh in May 2013 when they walked dogs on leads across a public footpath through Elbow Field, Turleigh. They were knocked to the ground by two cows and stamped on. Mike died at the scene of internal bleeding.
The inquest heard that Simon Dark, Bleddyn Griffiths and David Billington had also suffered injuries after being trampled in the fields in 2008 and 2011 - although it was not possible to say whether the same cows were involved.
The farmer Brian Godwin, 81, had been visited by the Health and Safety Executive after Mr Billington was injured. He had put in place some safety measures, including signs and some electric fencing. He has since sold the cattle and is trying to establish a new herd.
The lawyers representing Mike Porter's partner Adrienne Sillar and their two sons said there was a "clear issue" about whether Elbow Field should remain a public right of way and "whether cows should share the enclosure".

Welsh Language Minister Alun Davies has written to the corporation seeking assurances over the future of factual and drama production in Wales.
BBC Studios has announced plans to cut about 300 staff across the UK.
Its director Mark Linsey said the proposals will help "provide even greater value to licence fee payers".
BBC Studios is a recent created division of the BBC which encompasses its in-house TV programme making in genres such as drama, factual and entertainment.
Mr Davies, who has responsibility for the Welsh Government's broadcasting policy, said: "I was extremely concerned to learn of this announcement and its implications for the BBC in Wales, especially the loss of 27 jobs."
The minister said he supported the Bectu union as it seeks assurances the redundancies will be achieved through voluntary means.
In a letter to BBC Director General Lord Hall, Mr Davies said: "Throughout the BBC Charter Review process, the Welsh Government has expressed concern about the BBC Studios proposal.
"We are not persuaded that a significant scaling back of BBC in-house production - which may well be the outcome of an entirely market driven approach to commissioning within the BBC - would be beneficial overall."
Mark Linsey, director of BBC Studios, said: "A strong, creative and competitive BBC Studios is crucial to maintaining the BBC's role as one of the world's great programme makers and ensuring that in-house production at the BBC has a secure future.
"With the removal of an in-house guarantee, we need to be able to develop programmes and projects for a variety of broadcasters, and compete effectively for the finest talent.
"The changes announced [on Thursday] will help us to reshape in response to a new landscape and provide even greater value to licence fee payers."
A man who survived a cow trampling attack in which his brother was killed has told the BBC public footpaths need to be made safer.
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The Welsh Government has said it was "extremely concerned" over news of 27 job cuts in Wales by the BBC's production arm, BBC Studios.